California Governor Gavin Newsom is advocating for a national tax on billionaires. This proposal was made despite his opposition to a similar tax in his home state of California. Newsom, a Democrat, is nearing the end of his term and is considering a presidential run.

Details of Newsom's national "billionaires' tax" plan are not fully available in this report. For more information on his proposal and its potential implications, readers can refer to the original source. Further details on Newsom's stance and the tax proposal can be found through KSAT 12, a local news source in San Antonio.