Sheldon Whitehouse: H.R. McMaster is a ‘certified, card-carrying grown-up’

Sen. Sheldon Whitehouse on Tuesday praised Army Lt. Gen. H.R. McMaster, President Trump’s new pick for national security adviser, as a “certified, card-carrying grown-up.” “Every time they add a grown-up into that equation, we should all be happy,” Mr. Whitehouse, Rhode Island Democrat, said on MSNBC’s “Morning Joe.” “And I think McMaster is a certified, card-carrying…