Nation George Soros, fellow billionaires urge tax on ultrawealthy in a letter to 2020 candidates June 24, 2019 Joshua Bote, USA TODAY Comments Off on George Soros, fellow billionaires urge tax on ultrawealthy in a letter to 2020 candidates Signatories include investor George Soros and filmmaker Abigail Disney, singling out Elizabeth Warren's policy as an example of wealth tax policy.