> Are BYD cars specifically banned or do they just not comply with all the US regulations?

Whatever the stated reasons are is one thing.

The biggest issue is that a network of BYDs in the US would be a massive intelligence coup.

It will never be permitted unless the intelligence aspect is addressed… if it can be.

That's the focus of the yet-to-be-passed bill that is circulating congress.

The patterns of aggressively tariffing foreign automakers for protectionism in the US long pre-dates any sort electronics in cars.

Lobbying forces in the US care deeply about the latter, not so much the former.