Republican attempts to label the migrant surge an “invasion” have fallen flat in the courts‚ where judges say the flow of people and drugs looks less like a constitution-breaking military incursion and more like the kind of border problems that have plagued the country for decades. It was supposed to be the silver bullet‚ the constitutional argument that allowed the states new freedom of action to stiffen their borders. Texas has cited an invasion in its justification for erecting a floating...