Can I re-enter the U.S. on B-2 (ESTA) while my I-129 (O-1) is still pending?

What does your employers immigration attorney say?

Does my friend have a chance of being approved on his application for waiver of inadmissibility ground based on hardship?

If he wants to stay in the US, he has to try regardless if it would successful. We know if he doesn't he would most likely be placed in removal...

My B1B2 was cancelled. Can I still apply for my H1B visa?

Have your employer contact one of the fine employment immigration attorneys on AVVO.

There are really good people working for our government. But they have to follow the rules and procedures.

If someone gets F 1 visa and can not enter to the U.S, Then apply for another F 1 visa, the first reject to coming the U.S is..

Yes. All of your prior applications are considered, if that's what your asking.

Can I apply for the American citizenship holding the green card with the priority date of my immigrant petition?

Sorry to dissapoint you but unfortunately that is not the way the law is written or interpreted. I will say though you are thinking like a lawyer.

CR1 or K-3? Im getting mixed messages online about which one is faster. I'm married, want to bring wife and kids from UK to US

Nothing beats a teleconference or even better, a meeting with an experienced immigration attorney to go over all of the issues and build a strategy...

When would I be able to file for citizenship?

4 yrs 9 mos

I was expelled from college for possessing marijuana, alcohol and a knife. Can I get F1 visa again?

Be honest!

Change of status from B1/B2 to H1B

Yes you can change status from B-1/B-2 to H-1B ONLY IF, you have maintained proper status and you are in valid status.