Montana has only one congressional district; it occupies the entire state. If I’m not mistaken, it’s the most populous congressional district in America. And if illegal aliens weren’t counted in congressional apportionment, Montana would have two congressional districts and California would have a few less. This would double Montana’s clout in the House of Representives and weaken California’s only slightly. I once asked Rep. Dennis Rehberg of Montana what he thought of his state’s peculiar situation. He shrugged it off: “They can’t take any more of Montana’s seats,” he said.