They want to sell tax breaks to the rich in exchange for “campaign contributions” which they will really spend on themselves . The taxes collected will actually go down as the objective is to raise their own income, not tax receipts.
The Kenyan’s objective is to bully the Republicans into breaking their no tax pledge and damage their brand. One this is achieved, he will use their vote against them
Better for the Republicans to go off the cliff and deal with the other side. It is not impossible to win the spending/deficit argument