Which in classic GOP mind set, means money today.  The economic impact of tax cuts is much slower and has less money multiplier impact than stimulus spending (which I am not advocating right now either). It may take years until tax cuts result in a big change in the economy but GOP wants to spend it now.  How to do?  Borrow.  Up goes deficit.  Double bad if the economy doesn't bounce as expected (like for example, we go to war with NK).