As Ruben Gallego prepares for the biggest ... When officials suggested he take a leave, Gallego joined the United States Marine Corps Reserve before returning to Harvard and graduating in 2004.

Rep. Ruben Gallego, a retired U.S. Marine and longtime U.S. representative in the House, is the front-runner to win Arizona's U.S. Senate seat and become the state's first Latino senator.

Ruben Gallego ... U.S. Customs and Border Protection Air and Marine Operations. “Strengthening our border includes keeping our waters secure," Gallego said in a written statement.

Ruben Gallego, D-Ariz ... the U.S. Coast Guard and U.S. Customs and Border Protection Air and Marine Operations. “Strengthening our border includes keeping our waters secure," Gallego said in a ...