In most circumstances, a trespassing charge and DUI will not permanently disqualify your friend from becoming a U.S. citizen through naturalization or be grounds for deportation/removal. However, he must show good moral conduct for the 5 years preceding his citizenship application. If his trespassing charge and DUI were within the last 5 years, he would have to wait until his convictions are more than 5 years old and has no other convictions within 5 years of his application.
Answered on Dec 05th, 2013 at 4:50 PM