Sen. Bernie Sanders apologized for allegations of sexual harassment and sexism lodged against his 2016 campaign, telling CNN's Anderson Cooper Wednesday night that if he runs for president in 2020, his team will "do better."

The big picture: The New York Times reported on Wednesday that a strategist on Sanders' 2016 campaign complained of sexual harassment by a campaign surrogate to her supervisor, Bill Velazquez, who made light of the allegations by saying she "would have liked it if he were younger." Sanders acknowledged that that the complaints were "not dealt with as effectively as possible," but said he was not aware of the allegations at the time: "I was a little bit busy running around the country trying to make the case."