Texas and federal government clash over how to deter illegal border crossings

This past week both President Biden and former President Trump visited the southern border in Texas. There's no denying immigration has become one of the most important and contentious issues in the presidential campaign. And there's no better example of that than the high stakes fight between the state of Texas and the federal government. Three years ago, Texas Gov. Greg Abbott launched "Operation Lone Star," deploying thousands of police and soldiers and miles of barriers to deter record numbers of illegal crossings. The Supreme Court has repeatedly ruled that immigration is the job of the federal government. But rarely…