Dave Regan, president of SEIU-United Healthcare Workers West, faces credible findings that he threatened and intimidated female labor leaders, physically assaulted former SEIU California executive director Courtni Pugh and pressured union officials to endorse Proposition 40. Investigations commissioned by SEIU and SEIU California and conducted by outside law firms also supported a claim that Regan warned the state council could face governance scrutiny if it did not back the proposed one-time 5% tax on billionaires’ assets. Regan denied the allegations and said opponents of Proposition 40 and former allies in SEIU California orchestrated a smear campaign. The measure has divided California Democrats and labor unions, with Gov. Gavin Newsom and other opponents warning it could drive wealthy taxpayers out of the state and destabilize public finances. Regan remains in office while SEIU hearings proceed and the union considers any disciplinary action.