TODAY News, April 20: Iran War Latest | Eight Children Killed In Louisiana Mass Shooting | President Trump vs. Pope Leo | Former U.S. Presidents Reflect On America 250

The U.S. seizes an Iranian tanker, raising retaliation fears and uncertainty over peace talks. Also, a Louisiana mass shooting leaves eight children dead. Plus, President Trump faces controversy over religious posts as Pope Leo pushes back during his peace-focused trip. And, Jenna Bush Hager sits down with former Presidents Biden, Obama, Clinton, and Bush to reflect on their time in office and America’s 250th anniversary.