OPT?

A visa stamped in your passport is not required in order to apply for OPT. A valid F1 status, is required (as evidenced on form I-797...

Will my mother be able to stay in us while waiting for gc processing

Yes, just make sure she does not leave the US while I-485 is pending and before I131 is approved (assuming she filed for I131).

Can my Spouse use same I-864 form for me and my son?

Each application needs its own form I864.

We filed i751 to remove conditions and we did not send tax info with other evidence items will this be a problem?

You may supplement your filing if you feel it is necessary. Further, USCIS may issue an RFE if they have concerns. Finally, if USCIS feels further...

TPS is a "temporary" status that does not give you a right to remain in the US permanently. Your wife may have a difficult time explaining that...

L1 to H1 Change of Status approved on October-8th and grace period to join the new employer

Among other things, you need to be mindful of the start date your H1b employer indicated on its LCA/H1b application. Also, if you don't start...

What is my status after getting a "fear of persecution" waiver for J1?

Applying for and obtaining a waiver does not grant you any status. It allows you to seek other immigrant/nonimmigrant status in the US without...

Will I get a new visa: Applying for new B1/B2 visa after overstaying F1 visa for two months?

Possible outcomes are denial or approval. Were you refused admission or did you withdraw request for admission at the time your F1 and B1 visas...

No, an EB1a self petitioner does not need to complete an affidavit of support.

How long does nvc take to process and give an answer on 601A waiver?

The processing time depends on where the I601A was filed. Check USCIS Processing times for your location.