Can we get back without a problem if he is on an oder of supervision if ICE stops him?

I agree with my colleagues. Contact a US immigration attorney for a complete review of risks prior to leaving the US.

Is the situation above legal or not.

Contact a US immigration attorney and/or an attorney who knows about the regulations for fire-arm ownership prior to making any purchases.

I renewed my passport Jan 2016 but forgot to renew i94. Now its been 30 days. I just noticed yesterday. Am on dependentvisa (L2)

I agree with my colleagues. Contact the company's US immigration attorney regarding leaving the US and re-entering to "cure" the overstay.

What to do when my dad's name on his current passport (which expires soon) is missing the last name for Green Card sponsorship?

I agree with my colleagues. Contact a US immigration attorney for assistance and to review the US State Dept. guidelines on documentation needs...

Am I ,in unmarried son or daughter over 21 F2B category ?

I agree with my colleagues. It depends on the petitioner's status. Contact a US immigration attorney for assistance.

Should I consider a salary pay cut in lieu of the H1B transfer?

I agree with my colleague. Contact the company's US immigration attorney to make sure any pay cut doesn't violate the H1B wage requirements.

I agree with my colleague. Some jobs are restricted to citizens and/or green card holders.

So this affects my record to become citizen?

Contact a US immigration attorney for assistance with reviewing the situation prior to filing and how to address it so that USCIS knows you are not...

Will I get 3 years of transfer approved with revoked I140?

I agree with my colleague. Contact your company's US immigration attorney for strategy assistance.

Does it make any difference in getting F-2 visas for family that F-1 student is in English school versus in college?

I agree with my colleagues. If you are an F1, your dependents can get F2. Contact your DSO for assistance.