Oli&Marie

Did your packet 3 or Packet 4 show an example of what they consider financial requirements?
And example for Montreal Packet 4 says: Proof of Financial Support (Form I‐134) and photocopy of supporting documents (IRS transcript or photocopy of the most recent Federal income tax return, bank statements, employment pay slips, etc.)
The problem with Tax returns and W2's for 2014 is that they were done in April or earlier and it doesn't mean they still have the job, which is when proving you still have the job comes into play.
My dad has a tax return and a W2 for this most recent tax season, and it shows him making over 100,000$ a year. He filed his taxes in April, and was laid off from his job in June. He CURRENTLY makes 0$ a year at the moment, but his Tax Return and W2 show that as of last year he was making 100,000$ a year.
That's why current income is more important, a lot of people could have great looking tax returns and w2's, but if they can't prove they currently still make that amount, the Tax return and W2 have no meaning.
Personally, if I were you, I'd get the "Only bring a tax return and W2" in writing (via email would be the best way if you can contact them using email) and take it to the interview. If you tell them someone you talked too told you to bring that, they may just respond with "you weren't told correctly".

For K1 you don't send anything through the NVC, nor do they look at any financial records or ask for them until the interview for K1. I'm assuming if the mother in law had issues mailing the tax return in general, it wasn't included as front loading in the I-129F packet.
As for not wanting to send the tax returns I understand, we were going to use my grandparents as cosponsors at some point and that was their main concern was they did not want to send it. They didn't want the info getting lost in the mail or the wrong hands.
More importantly, did your cosponsor send you information about CURRENT income? A letter from their employer and a month or so of paystubs? Did both your fiance and your cosponsor send paystubs?
Proving CURRENT income is the most important. While it's hard to get by without tax returns in some cases, if you can prove that they make enough currently without a reasonable doubt, then you should be okay. But to do this you would need an employer letter saying that their job is permanent, how long they've worked there, and their estimated annual income for the next 12 months, signed and done by the sponsor and cosponsors respective employers.
If your cosponsor ONLY sent a W2 and a filed out I-134 then there's a good chance they're going to ask for more information and ask for the tax returns and/or proof of current income and put ya'll under Admin Processing until you get the documents in.

Hi,
Did she send the 1040 in with the I-134 to the NVC?
If no, then it's a problem since a complete tax return is required. Complete tax return means the W-2s, the 1040, and other documents sent in to the IRS. You will not get a K-1 visa if she does not provide the required information.
If yes, then it may not be a problem since she already submitted the 1040.
Best of luck

What did she send to prove current income? W2 is last year and in no way gives evidence of current earnings.
If your sponsor doesn't want to supply the needed documents then get a new sponsor. Now all you can do is hope for the best. If it creates a delay then address the problem.

Hi guys,
I am currently visiting my fiancé in New York, and I thought I'd tell you a bit about my experience at JFK airport upon my arrival on July 15th.
I was quite nervous, since I don't have a paid job at the moment (only an unpaid internship), and I'm staying at my parents' house for the time being. I had brought a letter from my boss and from my unemployment insurance company stating that i have 4 weeks of vacation, and that i must return to work as well to a meeting with the unemployment company in order to continue to recieve unemployment benefits. i also had m return ticket as well as a copy of our i-129f and NOA1. i was worried that this wouldn't be enough, but in fact I wasn't asked to show any documents at all.
The immigration officer asked about my business in the US, to which I answered "vacation". He also asked about my return date, which i of course told him as well. but he literally asked nothing more than that. It was really easy peasy, and I have never experienced an easier and faster entryto the US. No line for the immigration officers, and my luggage was right there when i got out. I was so happy and relieved!

Yaay, we finally got approved! I just can't decribe how good it feels :D
yesterday I had another mental meltdown because of this insanely frustrating process. and then all of a sudden it happened! congrats to everyone elese who got accepted, and to those who feel like I did yesterday: hang in there -- YOU WILL GET IT SOON! you are badass visa warriors ;-)