"Petty, selfish, unhinged": Haley Stevens' staff and colleagues erupt at her "betrayal"

Rep. Haley Stevens (D-Mich.) faced fierce backlash from fellow Democrats, party officials and her own staffers after endorsing Republican Mike Rogers for U.S. Senate on Sunday.Why it matters: It's a stunning reversal in standing for Stevens, who came within a few percentage points of being her party's nominee for Senate in Michigan just months earlier."Pathetic, petty, selfish, unhinged," Rep. Jared Huffman (D-Calif.) told Axios of her endorsement of Rogers. "You run out of words."Rep. Sam Liccardo (D-Calif.) said of the video Stevens posted to social media announcing her endorsement and her j