Sen. Mark Warner says the US needs ‘serious people’ to take on the country’s ‘serious problems’

Sen. Mark Warner, D-Va., discusses President-elect Trump’s decision to appoint Sen. Marco Rubio, R-Fla., as secretary of state and Rep. Matt Gaetz, R-Fla., as attorney general on ‘Your World.’ Sen. Mark Warner, D-Va., discusses President-elect Trump’s decision to appoint Sen. Marco Rubio, R-Fla., as secretary of state and Rep. Matt Gaetz, R-Fla., as attorney general on ‘Your World.’