The union leader spearheading California’s controversial billionaire tax proposal went on the offensive against Gov. Gavin Newsom, accusing the Democrat of cozying up to the ultra-rich as the pair clash over a last-ditch effort to keep the measure off the November ballot. In a blistering interview with The Lever, Dave Regan, president of SEIU-United Healthcare Workers West, blasted Newsom’s opposition to the proposed tax, suggesting the governor’s stance is driven by political ambition rather