Howd they get there?
Seems like this has been reported for a while that there are many waiting to enter the US.
Photo description on the link:
Haitian migrants ask for food outside Padre Chava shelter after leaving Brazil, where they sought refuge after Haitis 2010 earthquake, but are now attempting to enter the U.S., in Tijuana, Mexico, October 3, 2016. Picture taken October 3, 2016. REUTERS/Edgard Garrido