Sen. Barrasso: 'The director of the Secret Service needs to go'

Sen. John Barrasso, R-Wyo., spoke to NBC News' Hallie Jackson about his expectations for the Republican National Convention and Sen. JD Vance, R-Ohio, joining as former President Trump's running mate. The senator also criticized a Secret Service briefing he and other lawmakers received on the Trump assassination attempt, calling on the Secret Service director to resign.