Gosia & Tito

You might to let this company know that the time for a work visa processing can easily be longer (and not a sure thing) than the time he gets an EAD thru AOS (which currently is around 2-4 months depending on where in the country you are. The time for EAD is from the time you get marry and file for AOS.
Now, if you are in the initial stages of K-1, it might make some sense, but alos notice that there are a limited number of work visas available per year. I don't know what the exact cap is now and also, the "year" for work visas start today (Monday actually that is the first work day) and in past years it was common that applications submitted for work visas run out the cap on the first day. Another problem is that for work visas a lawyer needs to be involved, though it might well be that this company is willing to take care of that. Did I say a work visa is not a sure thing? Meaning that just because you applied does not mean you will get a work visa.
And finally, as others had pointed out, it could be seen as misrepresentation.
If the skill is worth waiting, companies wait months...Seems like the K-1 could be the best route.

Not to be negative and knowing full well how this could sound as 'time wasted'; I think you should at least consider and understand the CR1 process. It would to start over but will provide a GC to your spouse since day 1. Given what you write about a job he has and his coming over frequently, etc, etc. You have to check CR1 in your specific case, but it's looking to me as if could be your best course of action. The 129 will have your spouse not working for a minimum of 2-3 months after marriage and without the possibility of leaving the country; unless a financial hardship advance parole is approved, which no one can guarantee.
With a CR1, as you will read, he continues working in Canada, you marry him soon, he can still come visit while the CR1 is in process; once approved, the GC is given immediately, he can leave the country and continue current work until he finds something this side of the border. The down side is that you would need to withdraw the 129F and start a new process, new fee, etc.
While he might have no problem finding a job here, the best situation is to look for a job while you have one.
As I said, at least check into that.

Pas problème.
There are some time limits to paperwork submitted here as well, but I believe is mostly for things that might change over time (pictures, police certificates, medical exams, that sort of thing). I believe yours is not one of those. As I said earlier, I'd send a copy and be ready to show original when you go to the interview. I understand you don't want to risk something happening to that paper.
I'd also re-post in the French forum, someone there could get you a better and more specific answer.

Well

Assuming that you go along with it, get your own attorney to have it checked. It is not so uncommon to have such a contract (pre nuptial agreement) here. As far fetched as this would sound, it could be a condition in the parents will (that is; for him to inherit, that if he was married a pre nup was executed.) Or it could also be that his parents are pressing for this and would have done with anyone not just you; after all, he's living at parents house, he works at dad's company, etc.
Keep in mind that in the US, in many states, no fault divorces are the law (that is, any spouse can ask for a divorce without anyone being at fault), also, many states are 'community property'. Also, normally, assets are community property from the time of marriage, this means any assets acquired before marriage are not considered community; this agreement is protecting future assets, his dad company being the main one. As I noted, it is not far fetch that parents have make this a requirement if he is to inherit company.

I do have a perfect real life example: friend of mine married and did not do a pre nup; he was running his parents business (ownership had been transferred to him already). Suddenly he passes and widow finds herself owning the business that my friend parent worked decades to develop. Parents of my friend and his siblings find themselves out of a business.
The business? a bookstore and paper store in the middle of Rodeo Drive, the highest cost real state in the West Coast, it was worth big$ just for the land.

Some people get offended by this kind of contracts, but you would need to look at marriage as being a contract, as cold as it sounds. For some other people it is normal.
I am not sure what is USCIS position in respect to pre nuptial agreements in the context of a K-1 though.
In your case, not disclosing it before hand is just not acceptable.

Depends on the Embassy. We were in Warsaw, they want it notarized despite what USCIS instructions say.
Cost nothing to do it and if done ahead of time, no delays. Nothing worst that finding at the interview and petitioner is not there to sign and notarize at the Embassy.

Australia
Belgium - also offers legal marriage
Brazil
Canada - also offers legal marriage
Denmark
Finland
France
Germany
Iceland
Israel
Netherlands - also offers legal marriage
New Zealand
Norway - also offers legal marriage
Portugal
South Africa - also offers legal marriage
Spain
Sweden - also offers legal marriage
Switzerland
United Kingdom

Australia
Belgium - also offers legal marriage
Brazil
Canada - also offers legal marriage
Denmark
Finland
France
Germany
Iceland
Israel
Netherlands - also offers legal marriage
New Zealand
Norway - also offers legal marriage
Portugal
South Africa - also offers legal marriage
Spain
Sweden - also offers legal marriage
Switzerland
United Kingdom

Australia
Belgium - also offers legal marriage
Brazil
Canada - also offers legal marriage
Denmark
Finland
France
Germany
Iceland
Israel
Netherlands - also offers legal marriage
New Zealand
Norway - also offers legal marriage
Portugal
South Africa - also offers legal marriage
Spain
Sweden - also offers legal marriage
Switzerland
United Kingdom

Australia
Belgium - also offers legal marriage
Brazil
Canada - also offers legal marriage
Denmark
Finland
France
Germany
Iceland
Israel
Netherlands - also offers legal marriage
New Zealand
Norway - also offers legal marriage
Portugal
South Africa - also offers legal marriage
Spain
Sweden - also offers legal marriage
Switzerland
United Kingdom

This guy is not owning his ####### (I am a guy myself). You do not owe him for school, cruise, or anything, he choose to marry you, period.
Maybe in another planet this is not cheating, in mine it is.
The fact that he created this FB account in a hidden way is already saying that he himself knows this is not right, even when he does not want to admit it.
Not saying you need to run or anything like that, but you would want to define what is what you want to do about it, it does not matter whether he or the sister-in-law think this is cheating or not; it affects you, you don't like it and consider it wrong, that should be enough.
At the end, the decision is yours, all we can do here is give our opinion.
Take care. Don't let anyone make you believe that you have to put up.

Don't panic just yet about the drug use, depending on what test was used and what specifically was tested (the most common is hair; but 'depending' is even depending on what kind of hair was used for test), some tests can come positive even after several months of no use, I've seen (in a line of work I do) sometimes showing to about 1+ year. On the other side, tests are fallible. If 2 tests were done, it is possible that the first came positive and thus the re-test. Tiredness looking has nothing to do with requesting a drug test, there are other indicators that are used by trained people to request a test.
My advice would be to ask your fiancee to provide you with test results or provide the testing site a release (to you). I concur with other posts noting that it sounds like a drugs matter. Without knowing the specific type of test and what specifically was tested is not possible to tell much; but that is why I noted that you see results yourself, because then you can decide whether to challenge the results (after consulting with an expert in drug testing).
Now, you also need to know whether he was taking some medicine that could've shown as 'drugs'; is not uncommon, and how that is resolved is by producing the med and the test facility very easily can then explain the results. There is definitely something going on here and you are 100% entitled to know what that is (from your fiancee first); even herbal products might appear as positive, though in smaller traces, but that could be confused with drug use several months ago when there might be nothing really.
As I said, there could be a 100% satisfactory explanation of a positive test, but also, it could just be plain use of drugs. Drug users don't usually admit it, specially if their use is low and/or not frequent, even when confronted with results; that is why re-tests are done, to eliminate errors.
You need to have an open and franc talk with your fiancee before proceeding.
Hope everything resolves well and fast.

All forms always note that the information provided in form is true to the best of your knowledge, which seems to be the case here. If new information becomes avaialble, you then disclose that with the proper documentation.
IN this case, you want a DNA test done and if in fact there is paternity, then you might first need to deal with laws in that country, you can't just take a children unless both parents consent. Of course, this might be a bit muddy since all you would have are affidavits in that there was no child before. If father works, it would be possible to show that no child was register with company or with government for possible governmentla benefits. The very fact thata DNA test was done is already an indication that doubts existed as to the paternity, and that woul dbe part of the documentation.

All forms always note that the information provided in form is true to the best of your knowledge, which seems to be the case here. If new information becomes avaialble, you then disclose that with the proper documentation.
IN this case, you want a DNA test done and if in fact there is paternity, then you might first need to deal with laws in that country, you can't just take a children unless both parents consent. Of course, this might be a bit muddy since all you would have are affidavits in that there was no child before. If father works, it would be possible to show that no child was register with company or with government for possible governmentla benefits. The very fact thata DNA test was done is already an indication that doubts existed as to the paternity, and that woul dbe part of the documentation.

First of all, don't panic.
Following is from the SSS site (http://www.sss.gov/FSmen.htm):
WHAT CAN YOU DO IF YOU DID NOT REGISTER AND ARE NOW 26 OR OLDER?
If you have passed your 26th birthday and are now being denied eligibility for Federal student financial aid, Federal job training, or Federal employment, or are having difficulty obtaining U.S. citizenship because you failed to register, you have the the following recourse available to you: Explain to the official handling your case (for example, a student financial aid officer) the reasons for your failure to register with Selective Service. A non-registrant may not be denied any benefit if he can "show by a preponderance of evidence" that his failure to register was not knowing and willful. Offer as much evidence supporting your case, and as much detail, as possible.
HOW TO GET AN OFFICIAL SELECTIVE SERVICE RESPONSE SAYING YOU WERE OR WERE NOT REQUIRED TO REGISTER
If you did not register with Selective Service, and are now a man over age 25, you may be ineligible for certain Federal or state programs and benefits, including U.S. citizenship. Some agencies may ask you to provide an official response from the Selective Service indicating if you were or were not required to register. To receive such a letter from the Selective Service System, please call 1-847-688-6888. Your call will be answered by an automated voice processing system. Please refrain from pressing any numbers, and an operator will soon come on the line to assist you. You may also send a written request to the Selective Service System at P.O. Box 94638, Palatine, IL 60094-4638. Ask for a "status information" letter. You will have to describe, in detail, the circumstances you believe prevented you from registering and provide copies of documents showing any periods when you were hospitalized, institutionalized, or incarcerated occurring between your 18th and 26th birthdays. If you are a non-citizen, you may be required to provide documents that show when you entered the United States. Please include your name, Social Security Number, date of birth, and return address.
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Thus, if you signed a statement during the Embassy interview, you can't just say "I forgot", but (IANAL, you should consult one as noted in other replies here) it might be possible to get an exception/dispense because you did not fully know/understand the consequences of not registering as it pertains to naturalization and that it was not your intent to evade the registration. Before doing anything, I'd consult an attorney, and possibly get a second opinion just to be sure. It seems not possible that you are the only immigrant man that missed this and given that there is no draft, the SSS might have seen this case before and will have a viable solution for this cases.

The day the government get a streamlined process I'll have to check if hell froze over....
But, on the good side, as I said in a prior post....your number is coming.....

If you get your story picked up by those carriers mentioned, you would be surprised to see how persuasive this is...specially now that campaigning for next election has started. If you do get the story picked up, make sure your Congressman is noted there, he might be prompted to personally be involved. Make them work for you!

It might just be a problem of bad English with nervousness. Every case is different, and unless all details are posted, not easy to make a determination.
If anything, the government here is not precisely clear and transparent in their forms and instructions, that is why VJ exists. Why would every embassy have a different procedure (aside from wanting to protect and catch fraud)??, it would make things much more easy to digest.
Then there is the well known time disparities across Vermont and California, the RFEs, etc. Even if some things are discretionary by the adjudicator, make it so is more predictable.
And they are not always clear and/or knowledgeable:
Just in the past 2 days, my fiancee was told (by an Embassy employee taking calls for fiancee/immigration visas no less) that the DS230 was a must for a K1. My understanding from the instructions is that is no needed unless you are in an immigrant track, which is confirmed here in VJ by a post.

Calm down. Things happen. At best, it will not matter, at worst you would get a reissued one; just a matter of time. First hand experience here.