Can I travel to Belarus if I have expired permanent green card with extension form I-797?

If the extension form you mentioned is for your I-751 application then, yes, you can travel abroad.

Can someone travel to the US on an unexpired B1/B2 visa for visiting relatives?

This should be fine. She should be prepared to explain the nature of her trip at the port of entry.

Can the divorce effect my citizenship? What can I do in that situation ?

Did you get your Green Card or Citizenship through marriage? Just double-checking. You should be fine since you have a child together. Feel free...

I just got married to my girlfriend..She’s a US citizen and currently unemployed. Can I file for marriage based green card

Yes, you should now be able to file. Consider using legal counsel for both the filing and interview. Best of luck!

F1 to Green Card. Will I have problems applying for a marriage-based green card?

You should be fine, provided that all paperwork is properly submitted. Consider using legal counsel for the filing and interview. Best to you!

What should I do as my wife's priority date is current but her form I-130 is not approved yet

Is she in the U.S. in valid visa status? If yes, she may be eligible to file Form I-485. If no, you'll have to wait for the I-130 to be approved,...

British mother visited and I-130 approval came through?

Finishing her GC process in the States should be fine but it may be best to work with an attorney. I'm happy to assist with the paperwork should...

US Citizenship

A 2-month trip will be fine for maintaining your LPR status and for Naturalization purposes.

If i apply for citizenship , and after my fingerprints can I go out of usa s as the processing time is 12 months in varagin

Yes, but be aware that a few of my clients were recently scheduled for their interviews in Fairfax 4-6 months after filing.

Though the K-1 is not an option in the U.S., you may be able to marry and then file to Adjust your status. Best to meet with an Immigration...