Closing the border is yet another bad idea from the Trump administration

The president has once again been going into paroxysms of rage and anxiety over migrants at the U.S.-Mexico border, and as usual, it has led him to some bad decisions. Not only is he expanding his legally dubious policy of forcing asylum-seekers to wait in Mexico as their claims proceed, but he is freezing humanitarian aid that was supposed to improve living conditions in Central America, and he is even threatening to shut the border entirely unless Mexico somehow miraculously finds a way to stop migrants from moving north.