He is only crippling himself. What he is doing is ostracizing the US from every other country in the world. Last week Germany and France spoke up against him, France reiterated yesterday after this announcement. He is effectively giving reasons to the EU and many other countries to exclude him from everything else. We'll see how the American economy does when nobody is doing business with the US anymore.
RE: Trump Just “Trumped” The Globalists—Makes Brilliant Move That’ll Cripple Their “Agreement”