In this Aug. 18, 2015 photo, a man pulling his luggage follows the signs to the Mexico border crossing in San Ysidro, Calif. Starting late Wednesday, Aug. 19, pedestrians going to Tijuana from San Diego at the San Ysidro crossing must choose between a line for Mexicans who get waved through, and a line for foreigners. Foreigners must show a passport, fill out a form and - if staying more than a week - pay for a six-month permit. (AP Photo/Lenny Ignelzi)