In his latest effort to court left-wing voters, Joe Biden announced that Rep. Alexandria Ocasio-Cortez will be co-chairwoman of his campaign task force on climate change.

The Wednesday announcement came during an interview with a local news station in Las Vegas, where Biden, the presumptive 2020 Democratic nominee, said he’s “working with Bernie and his people” on his policy agenda — a reference to Vermont Sen. Bernie Sanders, his vanquished Democratic primary rival and a leading figure on the far-left.