Amid Trump visit, it’s business as usual for border towns

In this March 6, 2018 picture, farmworker Santiago Martinez, of Mexicali, Mexico, picks cabbage before dawn in a field outside of Calexico, Calif. For decades, cross-border commuters have picked lettuce, carrots, broccoli, onions, cauliflower and other vegetables that make California’s Imperial Valley “America’s Salad Bowl” from December through March. As Trump visits the border for the first time as president on Tuesday, March 13, the harvest is a reminder of how little has changed despite heated rhetoric in Washington. (AP Photo/Gregory Bull)

FILE - This Oct. 26, 2017, file photo shows prototypes of border walls in San Diego. President Donal Trump is heading to California on March 13, 2018, in his first visit to the state he loves to hate, since becoming president. (AP Photo/Elliott Spagat, File)

CALEXICO, Calif. — The daily commute from Mexico to California farms is the same as it was before Donald Trump became president. Hundreds of Mexicans cross the border and line the sidewalks of Calexico’s tiny downtown by 4 a.m., napping on cardboard sheets and blankets or sipping coffee from a 24-hour doughnut shop until buses leave for the fields.