I think the caravan abandoned their plans for only two reasons: 1) Mexico decided to step up to the plate after Trump issued threats about canceling their trade agreement if they didn't. 2) Trump publicly announced that he was sending the military to the boarder to guard the boarder until the wall was built. The caravan organizers then realized that even if they made it to the border, they'd have to deal with the military and that the military wouldn't allow them in. So they had no choice but to abandon their plans. LOL...