The new tax bill under consideration in the Senate is fine news for anyone that makes a lot of money. It sucks for anyone else. But then, only rich people pay for campaigns - so the donors are getting what they paid for (and they paid for our representatives).
The (non-partisan) Congressional Budget Office - that is the Budget Office that the Congress created and staffed - has the projections below. Negative numbers mean they pay less. Positive numbers mean they pay more.
But, hell, you can just think of it this way - who does Congress love - rich people. Then you can read the table without too much thinking. (link)