If your employment-based green card application is in process and you lose your job, you might have options to continue with the process with a new employer.
If you are an employer thinking about sponsoring your foreign worker for a U.S. green card through PERM, this article provides an overview of your liabilities and responsibilities as a green card sponsor.
If you received "conditional residence" through the EB-5 investor visa program, you will need to complete and submit for I-829 within the time limits to become a legal permanent resident.
If you are in the United States on an F-2 visa—that is, as the dependent of an academic student on an F-1 visa—and an employer offers you a job, getting an H-1B visa might be a good possibility.
There are legal ways to switch from one visa status to another with a gap in between, but only if you make sure that you never let one visa lapse without having another one in the works.
The I-539 form, issued by U.S. Citizenship and Immigration Services (USCIS), allows people in the U.S. on nonimmigrant (temporary) visas to apply to switch to another type of visa (change status) or to extend their U.S. stay.
Failure to file the I-129 form with USCIS at the right time could lead to denied U.S. immigration status or the continuation of existing legal employment status.