The son of an immigrant, he represented a majority Hispanic district in Arizona for 12 terms but had lately been absent from Capitol Hill while being treated for cancer.

Arizona Democratic Rep. Raúl M. Grijalva died Thursday at age 77 due to complications from cancer treatments, his office said. Since he announced a lung cancer diagnosis in April, Grijalva has spent little time in Washington while he sought treatment for the disease over many months,

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,