Can I reenter the U.S. on an F1 visa that is almost expired?

You should apply for a new F-1 visa.

Employment authorization as an immigrant?

You do not need to apply for employment authorization from USCIS in order to work part-time on campus.

Unless you are a lawful permanent resident of the U.S., you can not travel outside the U.S. while your case is in removal proceedings. Please see

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Can I enter US with a tourist visa even if I am maried to a US ctizen.

No, the CBP generally would not have a record of your marriage at the port of entry. Just tell the truth, and know that if you are asked about...

Alien Registration Number?

F-1 students, unless they are on CPT or OPT work permits, generally do not have alien registration numbers. Please see

Can one switch from L2 to H1 without leaving the country

She can change status without leaving the U.S. Please see

If you have a Immigration hold but your case has been administratively closed should hold be removed?

No, he will be transferred from criminal to immigration custody when his criminal case in over. Please see

Need help after removal terminated by the Immigration judge.

You should wait for the examiner to obtain your file and approve your I-485 application.

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How do I become legal in US?

I agree with the above answer. For additional information, please see

How to cancel asylum

If you have continually maintained F-1 student status, you can ask the Immigration Judge to terminate removal proceedings to allow you to continue...