@E99 -- Upon further review, I think I'm off by an order of magnitude.
My numbers: Presidential salary = $400,000 year = 4.0 x 10^5
US federal budget = abour $4 trillion/year = 4.0 x 10^12
By forgoing his Presidential salary, Trump is saving the taxpayers 4.0x10^5/4.0x10^12 of the federal budget = 1.0 x 10^-7 = one TEN MILLIONTH of the budget.
My sentiments, exactly! I told one of my friends, this morning, that the working class sold their souls to the devil, like Faust. My name comes from this opera. This is why I chose it. Not because I sold my soul to the devil, but because it is musical. I love the music.
Assuming all 535 members of Congress forwent their $174,000 salaries, the total would be $93 million dollars. That would be a whopping 2 TEN-THOUSANDTHS of the federal budget. That would pay for ONE F-35 fighter jet.