I do not believe they will admit you. Apply instead at the U.S. consulate where you live.

Choose wherever your fiance is living, in legal immigration status.

A person who files a timely application for change of status can legally stay in the U.S. until there is a decision.

Nowhere on any of the form instructions does it request a photocopy of one's social security card.

Getting a J1 or J2 does not make one ineligible for an L1.

Your number remains the same. You may wish to get an unrestricted social security card though.

If you have the job title, job duties and requisite experience, it should be no problem for the PERM application to be approved.

There is no rule against sending documents before USCIS requests them.

There is a discretionary sixty day grace period to port to a new H1b employer.

If USCIS authorized her to work, then it would not violate her status to work. The employer is not required to offer employment without proper...