Why do you ask? The physical location of your file is not important. Infact, your file(s) will probably move around several times before you...

Will unemployment benefits harm my immigration process?

Unemployment is an INSURANCE program and NOT a 'public benefit' ... don't worrry.

I'm glad that you changed your wording from 'child' to 'son' ... he is over 21 after all. 1) What documents need to put together inside the...

About h1b application?

What is this person's current sttus in the US? F-1/OPT? Yes, the company needs an attorney .. they must pay, not the future employee.

Who is eliglbe to be filed for FOLLOWING TO JOIN BENEFITS?

He can not follow to join for the same reason as him having been denied the visa ... too old. File a form I-130 to sponsor him.

I am inadmissible?

You stated 'no conviction' ... BUT, what about a diversion program? And/or drug/alcohol classes? The AP is no good because you left the US...

When can I expect a call for my GC interview?

There is no way to accurately predict. But my guess is that it will be more than 1 year after you filed the I-485.

Applying for new H1B visa petition by new employer, after completing 2 month less to six years limit of previously approved H1B?

From the limited facts you have given ...you need to go home for a year before an employer can file for a new 6-year cap-subject petition.

Do I need to file I-864 and I-944 as an approved EB1 applicant?

Need to file form I-864? NO Need to file form I-944? YES

J1 212e visa changed to B2, is this good reason?

Actually, if you want to stay for tests ... you should have requested B-1.