In a 30-minute phone interview Thursday with NBC News, Miller outlined four major priorities: limiting asylum grants, punishing and outlawing so-called sanctuary cities, expanding the so-called travel ban with tougher screening for visa applicants and slapping new limits on work visas.

The objective, he said, is “raising and enhancing the standard for entry” to the United States.

Some of the plans would require legislation. Others could be achieved through executive action, which the Trump administration has relied on heavily in the absence of a major immigration bill.

“In many cases, fixing these problems and restoring some semblance of sanity to our immigration programs does involve regulatory reform,” Miller said. “Congress has delegated a lot of authority. … And that underscores the depth of the choice facing the American people.”