Rep. Raul Grijalva has dropped out of the race for the top Democratic spot on the Natural Resources Committee, according to two people familiar with the matter, potentially averting a generational clash over the leadership position.

Grijalva (D-Ariz.), who’d been absent from Congress while going through treatment for cancer, had faced a challenge from Rep. Jared Huffman (D-Calif.), as House Democrats weigh whether to cast aside some of their most senior committee leaders.