Money is taken from people that produce goods, services, and employment and is given to people who don't.
Tax the rich excessively more than anybody else, and all you do is encourage them to shelter their money and assets off shore, to move their enterprises to other countries leaving only those businesses in the USA that they can write off most or all the income.
Tax the rich excessively more than anybody else and you encourage them not to build, increase, expand their enterprises here in the USA which means fewer good jobs, lower salaries, fewer benefits, less opportunity for other citizens to become rich.
Tax the rich excessively more than anybody else likely results in them not giving so much in philanthropy for new hospital wings, museum exhibits, foundations/research centers, sports facilities for kids, etc. and that makes all of us poorer.
Tax the rich excessively more than anybody else and they will put less of their money into American banks for others who need it to borrow to buy that new car, a new mortgage, investment capital for their own businesses, etc.
The rich provide jobs, opportunity, investment, philanthropy, valuable markets for others that the poorer Americans cannot. I doubt any of us was provided a job, much less a living wage, by a poor man. And reduce their ability and incentive to invest in America and it invariable hurts those who are not rich as well as mean less revenue for the U.S. treasury.
George H.W. Bush lost his second election due to breaking his campaign pledge of no new taxes. He believed the Democrats would keep their pledge to cut spending if he agreed to the tax the rich We did get about $50 million in immediate new revenue but we didn't get the spending cuts. And the new taxes decimated our domestic boat and private plane building industries and high end jewelry businesses by driving them off short, costing many thousands of American jobs.
We should appreciate and encourage Americans to become rich, not punish them for their wealth or be fooled that we'll get all the golden eggs if we kill the goose that laid them.