Oh, Trump is all about isolationism (whether it be climate change, visitor's visas, immigration, or trade agreements). In this particular case we throw away tremendous leverage on a number of issues for what? To create a vacuum for China to fill; of course TPP is meaningless without USA and alternatives will emerge. Friedman points out that China will benefit. And what benefit or leverage do we get in return? Nothing. We are isolated right now in the World arena. I think we are all understanding why Donald Trump has been in bankruptcy many time is his life, and I believe the end result of TPP withdrawal (and his other juvenile decisions) will be something very close to bankruptcy  for our country.