Star Wars Trash Compactor The relentless pressure on both countries to expand their exports is threatening to create a trade war between the US and China.

Congressmen, feeling the populist pressure from voters back home, have approved a new bill that would place import duties on Chinese goods, if they don't revalue the yuan. The bill has yet to be passed by the House or Senate.

But if the U.S. government enters into a tit-for-tat trade war with China, it's likely the Chinese will respond. And that could hammer U.S. companies that export to China.

We've evaluated the states, using data from the U.S. China Business Council, that export the most to China, and companies that might get crushed in each if a trade war commences.