Plus: The Trump administration is limiting how long foreign students can stay in the U.S. And Iran has allowed an American citizen that it held for more than a year to go free. Alex Ossola hosts. Sign up for WSJ’s free What’s News newsletter. An artificial-intelligence tool assisted in the making of this episode by creating summaries that were based on Wall Street Journal reporting and reviewed and adapted by an editor. Learn more about your ad choices. Visit megaphone.fm/adchoices