Democratic U.S. Rep. Raúl M. Grijalva of Arizona, who championed environmental protection during his 12 terms in Congress, died Thursday of complications from cancer treatments, his office said.
Grijalva, who was 77, had risen to chair the U.S. House Natural Resources Committee and was the top Democrat on the committee until earlier this year. He had been absent from Congress as he underwent cancer treatment in recent months.
Grijalva speaks during the first day of the 2016 Democratic National Convention in Philadelphia.