it would take only one quick incident from the other side of the fence to turn this into a cluster-.
DJT should order Mexico to move them back 1000 yards for their own security. Then we close the gates and shut down all commerce.
http://www.latimes.com/local/california/la-me-san-ysidro-border-caravan-20181113-story.html
Officials to close some northbound lanes of San Diego border crossings ahead of caravan’s arrival
https://www.thestate.com/news/nation-world/world/article221589085.html
US hardens border at Tijuana to prepare for migrant caravan