This makes good sense. The point of the caravan is to demonize Trump for being a big bad meanie to the poor defenseless MS13 clan who JUST wants a better life. Disband them before they reach the border, the point of contention is removed and the media has nothing to scream about - they wouldn't DARE cry about Mexico's handling of immigrants. Let some in, and Trump gets brownie points over an issue that was supposed to destroy him. Once those few cross the border, nobody is going to give a flying fuck what happens to them. At which point they're quietly shipped back to wherever they came from. Case closed, Trump wins.