In this Sept. 24, 2020 file photo, Sen. Tom Udall, D-N.M., speaks during a Senate Foreign Relations Committee hearing on Capitol Hill in Washington. Udall is retiring from the Senate, but has emerged as a leading contender to be Interior secretary under President-elect Joe Biden. If chosen, the Democrat would follow in the footsteps of his father, Stewart Udall, a former congressman who led Interior under two Democratic presidents in the 1960s. (AP Photo/Susan Walsh, Pool)