Generally he cannot be deported without an order of removal, but OPLA could terminate proceedings and put him in expedited removal. If you wait...

If he was lawfully admitted to the U.S., or if he is in TPS status for IR petitions in some circumstances, he can adjust in the U.S.

A US citizen can file an immigrant visa petition for his or her brothers and sisters to immigrate to the U.S.

If you have an EAD you are allowed to work in the U.S. and working will not violate your status except in the case of students on OPT/CPT who may...

He can file a response and provide information to show that he has maintained his lawful status in the U.S., or he can leave and notify them he left.

OPLA often files it with the court on the day of the hearing so he will in fact need to show up or risk getting an absentia order of removal.

No, Customs and Border Protection checks people's immigration status, and they can do so in airports even for domestic flights.

No, you are not likely to face any difficult returning to the U.S. after visiting Turkey, based on the fact that you were born in Iran.

There is no n ew law or new executive order prohibiting permanent residents of the U.S. from leaving the country.

If your priority date is current and you have a pending application for extension of status, you should be eligible to file for adjustment of status.