N-400 do I put that I have volunteered?

You may. Although, the question is directed toward political organizations.

your approval is evidence that DHS has authorized your stay in the US. CBP I-94 is an admission document and will not update their system and need...

OPT Cap Gap does not apply to cap H1B exempt petitions. You are in your 60 day grace period. I recommend your employer upgrade your petition to...

Physical Therapist - coming to California on TN Visa. Is California License Required?

The list of professions reveals requirements for admission into the United States under immigration provisions. Such requirements for admission or...

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H1B Premium processing possible?

Current USCIS H1B processing is 3 months (despite it listing 2). You may file regular processing and always upgrade if need.

Is there any need to file PERM and I-140 again by new employer after EAD approval ?

After you I-485 has been pending 180 days you may change employers in a same or similar position as originally sponsored.

I use tourist visa into USA &got married. Now do I need file I-485 to adjust status? or do I need file I-130 & I-485 together?

the I-130 and I-485 are usually filed together after 60 days or so of entry.

Moving from company A to B and in 2 weeks to company C with I-145 pending status for 45 days.

How are you transferring? On H1B or on EAD? Do you have a choice? AC21 regulations permit transfer to a new employer in a same or similar...

OPT approved and Sevis record indicate reject

I think the SEVIS record is enough to worry over. The DSO should advise you on his/her expectation. Generally, the SEVIS record can be revised.

Can my employer file my green card , if I am on OPT extension

Green card sponsorship for employment as EB1. extraordinary ability, outstanding researcher, multinational manager would be possible. Employer...