Trump’s tariffs are here. What you need to know.

On today’s show: Trump’s tariffs against Mexico, Canada, and China went into effect Monday night, and China and Canada quickly retaliated. The Washington Post examines what it could all mean for the price of goods, and Bloomberg looks at the possible economic fallout in Mexico. Ann Marimow from the Washington Post joins to discuss an unusual case before the Supreme Court today pitting Mexico against U.S. gun manufacturers. The Wall Street Journal’s Tarini Parti explains how the push to increase immigration arrest numbers is ensnaring migrants without criminal records. Plus, Trump halts all U.S. military aid to Ukraine, the man whose blood saved 2 million babies, and Los Angeles Lakers star LeBron James prepares to make more basketball history.