CBS Evening News with Norah O'Donnell, 05/16/23

Search for motive after in deadly New Mexico shooting. The secret service has launched an investigation into how an unidentified man entered National Security Adviser Jake Sullivan's residence while agents were on duty last month. America's CEOs are warning of a devastating scenario and potentially disastrous consequences if the U.S. defaults on its debts. Progress was made on Tuesday during a high-stakes Oval Office meeting, and the situation has led President Biden to shorten an upcoming overseas trip. Most know Russia's Wagner Group, a private paramilitary organization with close ties to Vladimir Putin, through its involvement in the war in Ukraine, but one of its main sources of funding comes from working with unsavory regimes around the world.