Long-serving Rep. Raúl Grijalva died Thursday after a battle with lung cancer, ending his decades-long career in public service and leaving a gap in Arizona's representation on Capitol Hill. One of Arizona's longest-serving congressmen,

Democratic U.S. Rep. Raúl M. Grijalva of Arizona has died. He championed environmental protection during his 12 terms in Congress. Grijalva was 77.

Raúl Grijalva, a 12-term Arizona Democrat who was a leading voice on immigration policy and expanding protection for public lands, died March 13 at 77. The cause was complications from lung cancer, his office announced.