When Donald Trump was running for reelection four years ago, he paid a visit to Bakersfield, California. With the Golden State staring down a historic drought, Trump held a standing-room-only rally in an airplane hangar, focusing on water needs in the state’s Central Valley, which stretches from Bakersfield hundreds of miles north and includes some of the country’s most productive farmland. Amid raucous cheers, the then-president signed a memo that directed federal agencies to relax endangered species rules, which had limited deliveries of irrigation water to fruit and nut farmers in the region.