In particular, Republicans seem to think that it is fiscally prudent to cut taxes, and to skew these tax cuts to the wealthy. They belong to the Church of Arthur Laffer (Reformed). The Gospel according to Laffer says that reducing taxes, up to a point, will increase government spending. There is some evidence that Lafferism is true, but the followers of the Reformed Church of Laffer ignore the bit about "up to a point". They use the Lafferite Gospel to justify any and all tax cuts. This is fiscally irresponsible, but few Republicans seem to have any real knowledge of economics.