Hello, I'm a student working on opt. I would like to know if I have to pay taxes or I exempted . thx

I would consult a tax attorney or CPA.

Can sponsored immigrant get emergency medicaid in Florida?

It should not be an issue in emergency cases.

Would there be a delay on the release of immigrant visa and processes now the state is in "government shutdown" mode?

It may make it slightly delayed but this "shut down" will not last.

Can I travel outside the U.S before Naturalization Interview ?

It shouldn't unless it made you I eligible.

ILLEGAL ALIEN

Not a good option. See an attorney ASAP

I am currently on h1b transfer process filed last march of this year. my I-94 & drivers license expired yesterday.

Maybe, but it depends on your state's dmv rules.

You need to speak with an immigration ASAP. There is developing case law in this area in the third circuit. It could go either way.

How long does a legal permanent resident be out of the US before his/her green card is no longer valid to enter US?

Being out of the US for more than one year presumes abandonment . He should try to get.back before the one is up. But I would seek assistance...

Yes, to be brief.

The answer is yes. I would consult with an immigration attorney to guide you through the process. It can potential be very tricky if not done...