Can I sponsor my sibling to USA?

Yes you can file a petition for them, but it is taking a long time for siblings to be able t immigrate. The current wait is more than 10 years. ...

When can i expect to receive my interview date?

did you submit the supporting documents after the DS260? takes a lot longer than 3 months in most cases, closer to 9+ months. ...

She will have to disclose you are in the US and you are a citizen. She has to show that she will return to her home country after the temporary...

There is no sponsoring for tourist visas, he needs to qualify on his own. You could write letter saying he will stay with you but that could also...

How long must I wait to apply for citizenship if I have a 10 year permanent residency card (exp 2020) but am recently divorced?

You can apply for citizenship at any time now.

My F1 visa was revoked at the US boarder

Maybe, why was it cancelled? its your responsibility to keep up with your F1 obligations.

Transfer from Company B to Company C with an approved petition from A, already started working for B

You have to maintain status at all times. Petition B must be approved before they approve Petition C. There are many different scenarios here, so...

No but you may not qualify for US citizenship if you do not have good moral character.

We have recently moved on L1A visa for work to WA, spouse on L2.Do we need to wait some months before applying for divorce?

This is family law question, moving categories. Yes the L2 would lose immigration stays once divorce is finalized.

Yes but since there’s no expiration date you might run into problems when ppl are not familiar with the older version.