Longtime Rep. Raul Grijalva, D-Ariz. passed away at 77 years old on Thursday after a battle with lung cancer.

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

Arizona Congressman Raul Grijalva, 77, has died from complications of his cancer treatment, his office announced Thursday. He battled cancer for more than a year.