Letter to the Hon. Mitch McConnell, Majority Leader of the U.S. Senate, the Hon. Charles Schumer, Democratic Leader of the U.S. Senate, the Hon. Chuck Grassley, Chairman of the Senate Finance Committee, the Hon. Ron Wyden, Ranking Member of Senate Finance Committee - Warner, Smith Introduce Legislative Fix to COVID-19 Unemployment Insurance Program that Excludes Millions of American Workers' Self-Employed Income