Migrants are packed into an extremely unsanitary and tight space where lice infestations and respiratory infections are rampant.
Migrants hoping to apply for asylum in the US must put their names on a waiting list that already had 3,000-plus people on it before the caravan arrived.
Caravan migrants in Tijuana en route to the U.S were weighing their options after a court blocked President Trump's asylum ban for illegal border crossers.
Hundreds of residents congregated around a monument in an affluent section of Tijuana on Sunday to protest the migrant caravan.
U.S. authorities discovered a cross-border drugs tunnel that ran a half-mile from Tijuana to San Diego; several tons of cocaine and marijuana were seized.