 And in a televised primetime Oval Office address last night, President Biden called on Americans to lower the temperature in our politics. Biden urged the public to give the FBI time to investigate. He has called for a security review of the rally. And security around the Republican National Convention is under heightened scrutiny. More than 50,000 politicians, delegates, media and others will gather for the event. CBS's Caitlin Huey Burns reports on the upgraded security plan.