You'll have to show us where in any free trade agreement it says we must purchase goods produced by communists.
Under "free trade", there cannot be any discrimination against communism as a form of government in their purchases
You don't have to buy anything produced by communists. Discriminate all you want.
We're not even 'free' to keep money out of communist countries anymore
Sure you are, don't buy their goods.
Will you ever tell us of what nation you're a citizen?