Hillary Clinton nets key endorsement following public apology of sorts

In an exclusive interview with NBC's Andrea Mitchell on Friday, Hillary Clinton said she's "sorry" there's been so much controversy over her private email server, but declined to apologize for the decision to use it. She also suggested that GOP front-runner Donald Trump is unqualified to be president and weighed in on the surprisingly robust challenge to her candidacy from Democratic primary rival Bernie Sanders. NBC’s Kelly O’Donnell reports for TODAY.

Best of TODAY

Play All