Gavin Newsom urges a national 'billionaires' tax' while fighting one in California

California governor calls for national tax on super-wealthy and suggests the US should own a stake in AI companiesUS politics live – latest updatesCalifornia’s governor, Gavin Newsom, called for a national “billionaires tax” on Friday as he fights a ballot measure targeting the ultra-wealthy in his home state.Newsom, who is expected to run for president in 2028, published his proposal the day after California officials certified a ballot proposal to levy a one-time 5% tax on residents worth more than $1bn. The proposal, called the California Billionaire Tax Act, was brought by the Service Employees International Union-United Healthcare Workers West