In the grand scheme of things tax cuts for the rich do not spur economic growth. This expands the most passive forms of capital at the expense of the most active in consumer spending. In fact government spending on infrastructure and services is as much a spur to economic activity as that from the private sector. The fanaticism around deficits is a chimera and a product of monetarist dogma (commodification and free markets in currency and credit).
But the surest anchor to sustainable economic growth is a large and prosperous middle class. That requires a fair and progressive tax system and a dirigiste role for government in ensuring and equitable sharing of wealth, fair wages.
The libertarian NeoCon/NeoLib policies of free trade, monetarism, deregulation, privatization, and regressive taxation (with respect to income, capital gains, estates) has decimated the Middle Class. We have an economy now the rewards the most parasitic elements in the economy (investment banking, trading) at the expense of the productive sectors.
I think Trump's tax cuts, which were rightly seen as a tax cut for the rich, is the reason he lost the House in the midterms.