The measure, backed by Service Employees International Union Healthcare Workers West, would impose a temporary 5% tax on individuals with a net worth exceeding $1 billion who were living in California as of Jan. 1, 2026.Supporters say the tax would generate about $100 billion in revenue, with most of the funds intended to offset federal cuts to healthcare programs for low-income residents, particularly Medicaid-related services.

The California Secretary of State must still verify the petitions and formally certify the measure for the ballot. Organizers said they submitted more than 1.5 million signatures, well above the roughly 875,000 required to qualify.California permits ballot campaigns to pay petition circulators per signature, and signature gathering costs often average around $15 each, making statewide initiatives among the most expensive in the country.

“This is about protecting healthcare access,” said Liz Perlman, executive director of an American Federation of State, County and Municipal Employees chapter supporting the proposal. “Hospitals are closing and people will die. Why? So billionaires can get another tax cut that they don’t need.”The proposal has quickly emerged as a national test of public sentiment on taxing extreme wealth and could trigger a multimillion-dollar political fight involving labor unions, wealthy donors and Silicon Valley executives.

Vermont Senator Bernie Sanders has publicly backed the initiative, while Democratic Governor Gavin Newsom and prominent California technology investors have strongly opposed it, warning it could accelerate the departure of high-income residents from the state.

Nearly half of California’s personal income tax revenue comes from the top 1% of earners, making the state particularly sensitive to migration among wealthy taxpayers.“After playing with matches since October, the SEIU has succeeded in lighting a ‘Tax the Rich’ wildfire,” said David Lesperance, a tax consultant who advises wealthy clients, some of whom have already relocated from California over concerns about the proposal.

Opponents argue that even a one-time wealth tax would create long-term fiscal risks by encouraging billionaires to shift residency and investment elsewhere.Brian Brokaw, a longtime Newsom adviser leading a political committee against the measure, said the proposal was structurally flawed and would weaken California’s tax base.

“Enacting a so-called wealth tax in just one state wouldn’t target a small group it would impact all 40 million Californians,” Brokaw said. “This proposal trades a short-term revenue bump for long-term losses.”At least 25 billionaires listed in Forbes magazine’s 2025 ranking of the world’s 500 wealthiest people either lived in California or maintained major ties to the state, according to an Associated Press review.

Determining tax liability, however, could become legally complex because many own multiple residences across different states.The push for additional state healthcare funding comes after President Donald Trump signed a federal tax-and-spending package last year that is projected to cut more than $1 trillion nationwide over a decade from Medicaid and federal food assistance programs.

The court’s brief and unsigned order did not provide reasoning, as is typical in emergency rulings. However, two liberal justices — Ketanji Brown Jackson and Sonia Sotomayor — issued a sharp dissent. Justice Jackson accused the majority of “botching” the legal balancing test, warning of “devastating consequences” for over 500,000 migrants who now face the threat of deportation.

The Temporary Protected Status (TPS) program had offered a two-year safe haven to people fleeing political turmoil, economic collapse, or natural disasters in their home countries. Critics of the administration’s policy say the sudden revocation could lead to the largest mass removal of legal residents in modern U.S. history.

Economic Impact and Humanitarian Concerns

Advocates and labor unions underscored the critical role these migrants play in the American economy, particularly in essential industries such as healthcare, construction, and manufacturing. At one auto parts factory, nearly one in five workers is reportedly under the TPS program.

“These are people who stepped up to support our economy during national shortages,” said one union representative. “Now the government is pulling the rug from under them.”

City governments and counties that have welcomed TPS holders joined legal challenges, citing potential “severe economic and societal harms” if the deportations proceed.

A Battle Between Executive Power and Judicial Oversight

The Trump administration maintains that the migrants’ continued presence is “against national interests,” and argues that courts have no authority to interfere. The Department of Homeland Security insists that the program, originally expanded by the Biden administration as a deterrent to illegal crossings, has instead backfired — encouraging more arrivals and straining immigration enforcement efforts.

Secretary of Homeland Security Kristi Noem, speaking earlier this year at a border security summit in Phoenix, stated that the administration is determined to “restore lawful order and national sovereignty.”

However, federal courts have shown resistance. A district judge in Massachusetts, Indira Talwani, ruled that early termination of TPS protections must be assessed individually, rather than through a mass cancellation. The 1st U.S. Circuit Court of Appeals agreed, temporarily halting the administration’s plan.

The Biden-era policy, now under attack, had sought to stabilize migration patterns by offering legal pathways to those escaping crises — a contrast to Trump’s strategy of swift deportation and tightened border enforcement.

Looking Ahead

Immigration rights groups are expected to continue legal challenges, with the case likely to return to the courts in full. In the meantime, over half a million people now face deep uncertainty about their futures in the U.S.

For families, employers, and communities across the country, the court’s decision marks a pivotal moment in the nation’s immigration debate — one that intertwines humanitarian responsibilities with questions of law, sovereignty, and national identity.