Do you really believe you have the legal right to deport asylum seekers who have complied in every respect with federal immigration law? And what will you do if the Mexican government refuses to accept the deportees? Use your paltry law enforcement resources to start a war with Mexico?
Texas decided to stop being a sovereign state in the 1840s because it didn’t have the resources to protect itself. It’s time to accept that fact, once and for all. The best you can hope for is to be an American equivalent of Viktor Orban doing battle within the EU.