Side note: CATO Institute has some studies on why immigration is important to the economic growth and future of the US. Several years ago, women started having fewer children. Those women are past child bearing age now and there is no way to go back and increase the birth rate. That deferral of child bearing is still keeping the birth rate down with a decreasing number of child bearing women having children young enough to increase the birth rate. There is a virtually unstoppable trend toward a lower birth rate, a higher proportion of aged in the population, and a smaller percentage of younger productive persons in a slow or non-growth or declining economy. We are heading to where Japan is and where much of Western Europe, and China are heading. What is offsetting this for the US is immigration. And even current levels of immigration will not offset the lowering birthrate with Trump's restrictions.