"Eisenhower explained it this way: The super-rich could avoid the high taxes by investing their money in things that make America stronger. If they wanted to avoid high taxes, he said they could invest in business expansions and higher employee wages. They could give a million or two to tax-exempt non-profits that feed, house, and clothe poor people of America, among other things.
"They did some of that, but the Eisenhower years generated enough taxes to launch and complete the labyrinth of interstate highways, the largest road project America had ever seen and is needed again."