Ultrasound Technologist Mayra Castaneda speaks in front of healthcare workers holding placards in support of the Billionaire Tax during a media briefing in Los Angeles on April 27, 2026. Healthcare workers and allies outlined the next steps in their effort to get California's Billionaire Tax on the ballot for the November election, with their efforts already exceeding 1,500,000 signatures collected from across the state. The initiative would levy a one-time 5% tax on California billionaires.