Harris defends policy flip-flops in preview of first interview since ascending ticket

Vice President Kamala Harris defended flip-flopping on key policies such as energy in a preview clip of her first sit-down interview with the media since ascending the Democratic presidential ticket. 

"Generally speaking, how should voters look at some of the changes that you've made?" CNN host Dana Bash asked Harris in the preview clip released late Thursday afternoon. "… Is it because you have more experience now, and you've learned more about the information? Is it because you were running for president in a Democratic primary?