"Now, government borrowing can still be justified if it serves an important purpose: Interest rates are still very low, and borrowing at those low rates to invest in much-needed infrastructure is still a very good idea, both because it would raise productivity and because it would provide a bit of insurance against future downturns. But while candidate Trump talked about increasing public investment, there’s no sign at all that congressional Republicans are going to make such investment a priority.
No, they’re going to blow up the deficit mainly by cutting taxes on the wealthy. And that won’t do anything significant to boost the economy or create jobs. In fact, by crowding out investment it will somewhat reduce long-term economic growth. Meanwhile, it will make the rich richer, even as cuts in social spending make the poor poorer and undermine security for the middle class. But that, of course, is the intention."