In the United States, extensive tax reform has not taken place since the Tax Reform Act of 1986, and like other tax reform, the flat tax has not advanced far in the US political process. However, Eastern Bloc countries have generally embraced the flat tax after the fall of the Iron Curtain. Hall and Rabushka have consulted extensively in designing flat taxes.
Carly Fiorina threw her public support in 2015 behind a 3-page tax plan that is largely based on this tax plan.[2]CNN Money believes that Fiorina's plan will include a 19% flat tax for individuals and businesses' operating incomes.[3]