Can I work in the United States?

You can apply to work after you finish your students. I would not recommend applying on your other passport. Best to consult an immigration attorney.

Applying for citizenship after 18 years of marriage living in US, have greencard. Do I have to list a marriage 22 years ago?

Yes you need to disclose the information of the first marriage.

Can chief residency year in a medical residency be used as a job for green card application?

Generally the answer to your question is no. For a green card position you need to have a full term permanent position.

If u turn back home volunteers

Generally if you stay in the US illegally for over a year and then leave the US, you are subject to a 10 year bar.

My son wants to petition for me to be a legal in in Mexico and his in TX what is the forms he needs Oh needs a attorney

Your children can file an I-103 petition to start the process. They should contact an immigration attorney as your case has many issues.

How long does it take for parents who are U.S Residents to petition a son and how long does it take if there citizens?

It should take about 7 years. It is best for your parents to file the petition as soon as possible so that you have a priority date.

Joint sponsor can or can't sponsor me in this situation?

You should consult an attorney. A letter from an employer is a good idea. It looks like you also need help paying filing fees.

I filed for asylum on December 2013 and received the letter to appear for the interview the following month.

Unfortunately, the clock has stopped because you were the cause of the delay in the processing of your application by not attending the scheduled...

It could be an issue and lead to the rejection of your submission. However, it is more likely that they will ask you to send additional envelopes...

Can I qualify for EB2 Category of Green Card Processing?

It looks like you do qualify for the EB2 category but you must find an employer willing to sponsor you.