Every major automaker in the U.S. just told Trump: keep Chinese cars out. Days before Xi lands. The coalition is the story. Tesla, foreign automakers, and 17,000 dealers together. • Signatories: 6 trade groups representing every major automaker in the U.S. • Dealers covered: ~17,000 franchised dealerships • Ask: "Keep the door firmly shut" to Chinese automakers • Trump's position (Sept 11): "If China wanted to come in and open a plant to build their cars here, I'd be OK with it" • Timing: Letter dated Thursday, ahead of Xi's Washington visit next week • Threat framing: "Once that base is hollowed out, it can't be rebuilt overnight" Here's the nuance most headlines will skip. The letter isn't just protectionism - it's a national security argument. The auto sector is described as "foundational to our advanced manufacturing and defense base, with the capacity and workforce to respond during a national emergency." That framing matters because it puts the industry in the same category as semiconductors and rare earths. But Trump is caught. He wants Xi to buy soybeans and Boeing. Beijing wants market access. If he greenlights Chinese plants on U.S. soil, he hands his base a broken promise and his donors a broken industry. If he refuses, the summit gets harder. Watch the Xi meeting. If Trump publicly walks back his Fox News comment, the truce holds. If he doubles down, the auto sector becomes the new front in the trade war. If Trump greenlights Chinese plants, does the U.S. auto industry lose its pricing power or does the national security framing kill the deal?