A Wisconsin man is being accused of impersonating a U.S. Border Patrol agent twice in January after approaching police officers and claiming to be off duty, according to prosecutors.

Agents with U.S. Immigration and Customs Enforcement in Philadelphia announced that an operation led to the arrest of seven illegal immigrants during a car wash raid.

O’Hara, 28, of Lilburn, Ga., served as a Black Hawk repairer in the Army from July 2014 until his death. He was the crew ...