Oops. Looks like Trump's budget contains a $2 Trillion math error. He is using additional revenue growth from 3 % GDP growth (highly unlikely rate of growth) resulting in part from the tax cut to balance the budget to the tune of $2 Trillion dollars. But his budget also says that the same $2 Trillion will be used for tax cuts!! That is like saying "I got a raise this year of $10,000 and that will let us pay off $10,000 of our credit card debt and finally be debt free. And we can give $10000 to our daughter for college expenses." Not too swift. Trump's budget guy says they will clean this up, but overall numbers are still good because they have some fat in the budget to get to the same number they have now-- so he is saying there is $2 Trillion of fat in the current draft.