Every US-made car is an import. That's bad news for automakers

That's because every car sold in America is at least partly imported.

The Commerce Department is considering tariffs on cars assembled at foreign plants and on foreign-made auto parts. Every car assembled in the United States contains a significant percentage of foreign parts, according to government data.

"There are no purely American vehicles," said Michelle Krebs, senior analyst at AutoTrader. "These are global automakers who use global sources for all types of parts."