Meet Trump’s pick to regulate your food and medicine

President Trump nominated White House aide Dr. Heidi Overton to lead the FDA, which has lacked a permanent leader for months. The Washington Post 's Rachel Roubein explains why some senators are already raising doubts. Trump paused steep tariffs on Canadian imports hours before they were set to take effect. The Wall Street Journal 's Gavin Bade breaks down what happened. The U.S. is casting a…