My brother has a warrant for his arrest and I wanna cross to the U.S. with him From T.J can I be arrested too?

Yes, you could be arrested. If he is sick and dying, why is coming to the United States?

Why haven’t I gotten paid back yet?

Changing category from immigration to consumer protection.

Can I use uscis flexibility responding RFE?

I would consult with an attorney at this point, this is not a do it yourself project. Hopefully your employer's attorney assisting you with the RFE.

How can I submit a document for the health insurance renewal date?

Explain the situation and why you do not have an official date to provide.

You should follow the directions closely as stated in the letter. You should have attorney attend the interview with you, as there may be problems...

Can you start working with I-765 approval notice without card?

You should wait until you actually receive the card.

Yes, this is certainly possible. Discuss your options with an immigration attorney.

Processing times huge variance?

I would not put too much stock in the online information. You will just to wait for application to be processsed.

yes, your friend can sponsor you. They will need to fill out USCIS paperwork. You will have to be accepted to a school first and have them...

You need to discuss this with a criminal defense lawyer in the area where you were charged. Changing category to criminal defense.