How to know if I have been banned temporarily or permanently from the U.S?

I agree with my colleagues. You past misrepresentation will have a negative impact on future visa applications. It would be best for you to meet...

How do I answer this RFE ?

You should read the rfe carefully. It sounds like they are asking for your 2018 tax returns. USCIS has been placing a lot more scrutiny on the...

Joint sponsor's income has recently increased and become over the poverty line. What should we do?

USCIS has been placing more scrutiny on the I-864. I would recommend getting another joint sponsor.

F-1 student waiting for I-485 interview schedule, do I have to continuing studying or I can quit school

It is important to maintain your current status. I know it may be taking a longer time than you expected for your interview, but the best course is...

Typograghic error of her last name in receipt notice by USCIS.

You should meet with an immigration attorney as soon as possible. Missing a biometrics appointment can result in a denial of her application.

Did I accrue unlawful presence?

I agree with my colleague. It does appear that you have accrued some amount of unlawful presence. It would be best to bring all of your paper work...

You should meet with an immigration attorney. If you have an alien number there may be a way to look up if there is a removal/deportation order.

When can I apply for citizenship?

You will need to wait 4 years and 9 months as your husband did not petition for you.

The I-864 states to include the assets of the principal sponsored immigrant. It sounds like you have enough income for you and your wife in your...

What should I do next? Is that problem gonna make it harder or affect negatively to my case? How long to get the receipt again?

You should provide the returned packet with appropriate fee to USCIS. Yes you can add supplemental information about the validity of your marriage.