> cut taxes, close the borders, and prosperity will result
That leads to a hot house. Targeting full employment and keeping capital local allows workers to bid up wages, which will create inflation, and investors will go on an "investment strike". It happened in the 70s.
Otoh, Open borders and targeting price stability allows capital to seek it's global return - inflation stays low, but inequality grows.
Pick one.
* explain yourselves, downvoters