The mechanism: In September 2024, USTR finalized a Section 301 hike that took the tariff on Chinese electric vehicles from 25% to 100% — a rate that isn't a tax, it's a wall. That wall is still standing in mid-2026, untouched even after the Supreme Court gutted the White House's separate IEEPA tariff authority, because Section 301 rests on different legal ground (a trade-practices statute, not emergency powers). The effect: BYD, at the price it actually sells cars for, cannot compete in America. Full stop.
The popular read is that this is a Tesla subsidy. It isn't, really. Tesla's problem was never getting undercut by BYD sedans in Ohio — it's a mature, high-cost-base company with plants in Shanghai and Berlin serving those markets directly, and it draws battery cells, LFP chemistry, and processed graphite from Chinese-linked supply chains regardless of what happens at the U.S. border. The tariff doesn't touch TSLA's margin structure. What it does is guarantee that Ford and GM keep building gas trucks and EVs in Kentucky, Michigan, and Tennessee instead of losing volume to a $12,000 Chinese import. And every one of those vehicles — EV or not — is built on U.S.-melted steel.