I agree with Trump on this point and unfortunately he is the only person except Rand Paul who has proposed as much. The United States pays for 70% of the NATO budget and what do we get in return? No much. A bunch of whiny European nations that refuse to spend for their own national defense, who are too politically correct to control their own borders, who are so weak and pathetic that ISIS can pull off multiple attacks within a few miles of both the EU and NATO HQs, and who never stop complaining about the United States. Same with the hundreds of billions of dollars we spend defending advanced democracies like Israel, South Korea and Japan. Of course, when Trump mentioned that maybe the United States should spend a little less on NATO, the usual neocon chickenhawk voices rose in shrill screeching unison complaining that that was a totally outrageous proposition: Hillary, the National Review, Ted Cruz, Bill Kristol, and all the useless American NATO generals and useless American diplomats who don’t want to give up the cushy Brussels cocktail circuit nor their taxpayer-funded European vacations, not to mention the insatiable military-industrial complex. The hell with NATO, NAFTA, TPP, the Middle East, Korea, Japan, and Europe. It is not isolationism to stop spending trillions on policing the world and to start spending American tax dollars on our decaying infrastructure, on Americans jobs, and on Americans. We should engage the rest of the world economically. It will be amazing to see how the rest of the world ceases to hate us as much when we stop sticking our nose in everyone else’s business.