puppalo

#1: A very small chance, and one that has nothing to do with the fact that you were flying to Puerto Rico/Guam/etc. It happened on 9/11, and sure, I can see it happening in rare circumstances, but it could happen flying NYC-SEA too. It's unlikely they'd let you off the plane in most of these circumstances, since most Americans don't even have passports!

#2: CBP visa checks happen on domestic flights - rarely. However, this is no different than if you were flying from Kansas City to Houston. America is America. With a pending AOS position you are in status, and you haven't left the country - you are fine. Again, USCIS has given specific guidance indicating it is fine.
 
This is a difficult enough process - there really isn't any reason to add imagined rules when USCIS has said specifically that this isn't an issue.

#1: A very small chance, and one that has nothing to do with the fact that you were flying to Puerto Rico/Guam/etc. It happened on 9/11, and sure, I can see it happening in rare circumstances, but it could happen flying NYC-SEA too. It's unlikely they'd let you off the plane in most of these circumstances, since most Americans don't even have passports!

#2: CBP visa checks happen on domestic flights - rarely. However, this is no different than if you were flying from Kansas City to Houston. America is America. With a pending AOS position you are in status, and you haven't left the country - you are fine. Again, USCIS has given specific guidance indicating it is fine.
 
This is a difficult enough process - there really isn't any reason to add imagined rules when USCIS has said specifically that this isn't an issue.

#1: A very small chance, and one that has nothing to do with the fact that you were flying to Puerto Rico/Guam/etc. It happened on 9/11, and sure, I can see it happening in rare circumstances, but it could happen flying NYC-SEA too. It's unlikely they'd let you off the plane in most of these circumstances, since most Americans don't even have passports!

#2: CBP visa checks happen on domestic flights - rarely. However, this is no different than if you were flying from Kansas City to Houston. America is America. With a pending AOS position you are in status, and you haven't left the country - you are fine. Again, USCIS has given specific guidance indicating it is fine.
 
This is a difficult enough process - there really isn't any reason to add imagined rules when USCIS has said specifically that this isn't an issue.

#1: A very small chance, and one that has nothing to do with the fact that you were flying to Puerto Rico/Guam/etc. It happened on 9/11, and sure, I can see it happening in rare circumstances, but it could happen flying NYC-SEA too. It's unlikely they'd let you off the plane in most of these circumstances, since most Americans don't even have passports!

#2: CBP visa checks happen on domestic flights - rarely. However, this is no different than if you were flying from Kansas City to Houston. America is America. With a pending AOS position you are in status, and you haven't left the country - you are fine. Again, USCIS has given specific guidance indicating it is fine.
 
This is a difficult enough process - there really isn't any reason to add imagined rules when USCIS has said specifically that this isn't an issue.

How long have you been in the US?
http://www.nolo.com/legal-encyclopedia/will-3060-day-rule-help-clear-suspicion-about-your-intentions-upon-us-entry.html
This is the guidance USCIS has given on the issue. VWP in and of itself isn't a problem, it's immigrant intent when you entered (including intending to marry and adjust status). Lots of visas aren't for immigration (B, J, F) and people do AOS while in the country. You can find lots of successful examples of all four cases in the forums (and of course, a few horror stories). If you are uneasy, you can use an attorney, but be selective. These aren't particularly hard forms to fill out, just tedious, and I think the field attracts some lawyers that aren't exactly our best and brightest. I have met some that gave advice I knew to be incorrect/potentially jeopardize someone's green card application.