H.R. 5224, the Criminal Alien Deportation Enforcement Act, would prohibit the issuance of visas to countries that refuse to repatriate deported aliens. Approximately 384,000 foreign nationals enter the country each year, across multiple visa categories, from recalcitrant countries.
H.R. 604, the Nuclear Family Priority Act of 2015, would eliminate the latter three categories, create a special non-working visa for parents, and not provide an increase in any other category, thereby directly decreasing overall immigration by more than 111,800 per year (1.118 million a decade). This would indirectly reduce the numbers by even more over time as there would be fewer recent immigrants who are the ones most likely to bring people into the country as spouses or parents of U.S. citizens.