![At POEs San Ysidro aerial Cars line up at the CBP inspection station at San Ysidro, Calif.](/sites/default/files/photo/San%20Ysidro%20Primary-JD.jpg)
Cars line up at the CBP inspection station at San Ysidro, Calif., thought to be the busiest land port in the world. (photo by Josh Denmark)
Cars line up at the CBP inspection station at San Ysidro, Calif., thought to be the busiest land port in the world. (photo by Josh Denmark)