In this 2014 photo, cars wait to enter the United States from Tijuana, Mexico, through the San Ysidro port of entry in San Diego.
In this 2014 photo, cars wait to enter the United States from Tijuana, Mexico, through the San Ysidro port of entry in San Diego. Gregory Bull Associated Press
In this 2014 photo, cars wait to enter the United States from Tijuana, Mexico, through the San Ysidro port of entry in San Diego. Gregory Bull Associated Press