If someone's b1 visa expires 5 days before the court date, should that person still file for i-539?

She can try , but i assume she is in jail and likely ICE will hold her

Relationships where one party is not present during the marriage ceremony (proxy marriages) unless the marriage has been consummated;​ See ​INA...

You are going to need an attorney to look at the Notice to Revoke. No one can help you on this forum without reading the notice

Can a USC father file for his 35 years old son who is on B2 visitor in the USA and how long will it likely take ?

Yes, your father can file for you, but you may not remain in the USA unless you can maintain valid non-immigrant status throughout the entire wait...

How does divorce affect permanent residency and citizenship application?

I agree with Mr. Brown. You should be fine going forward unless USCIS uncovers fraud in your case

How long after the interview can I schedule the infopass appointment?

You can schedule an infopass now if you like , but it seems USCIS is looking into something in your case

Filed I-130 & I-485, it was rejected: "The payment amount is incorrect, or has not been provided."

YEs you do the I-485 fee should be $1225 Age 14 – 78 $1,140 $85 $1,225

Contact ICE, USCIS and Department of Labor

For H4 EAD is leave without pay an option till renewal comes in

That is a likely a question for your HR. You are not authorized to work without a valid EAD

if you were not required to file taxes as you did not have income, USCIS will l not penalize you. if you were required, you should talk to a tax...