I have give change of status from B1/B2 to F1

as long as the change of status is still pending you may stay here and wait for a response but don't start in school until you get an approval of...

Forgot to sign my form N-400!!

Most likely it will be rejected in the mail room and the whole package with check returned to you.

Will an ESTA be okay for US entry?

I concur with my colleague. The saving grace is that J-1's do not accrue unlawful presence under your scenario.

Employer A filed my H1 b and I moved to B and I dont want to goto A again and Can I transfer H1b to B without working for A???

You need a new I-20 to transfer your OPT to employer B. If they are willing to file an H-1B petition for you and you were selected in the lottery...

For an EB1A green card petition, is there a recommended maximum length of the petition?

Our cover pages are that long but supporting documents can be 500-1000 pages.

Supporting documents for immigration also includes petitioner's documents. What are these documents?

This varies somewhat consulate by consulate and depends on whether you meet the ability to pay test. Proof of your citizenship, 2014 tax return...

H-4 EAD

I would just file both in mid-June. The one you file now will end up with very little time on it and you can't have two EAD's at the same time...

TN Renewal from within the US.

If you go to a contiguous territory you are eligible for automatic visa re-validation. You just show the approval with tear off I-94 card on exit...

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Question about social security update after naturalization?

If you became a citizen automatically you should file N-600 to get a Certificate and also apply for a U.S. passport and then go to Social Security...

Waiver of inadmissibility (B1/B2) Does it have to say I have been approved to apply for a TN too? Canadian citizen

If you are qualified for the TN by the consulate they will recommend you for the waiver. The waiver must apply to the TN as now it only states...

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