While Washington focuses on the impeachment process, President Trump is taking another step on immigration policy, this time targeting what's known as "birth tourism."

Current U.S. law, through the 14th amendment to the Constitution, confers citizenship on anyone born in the United States.

Center for Immigration Studies Executive Director Mark Krikorian says this is not just a matter of people timing vacations in order for mothers to give birth in the U.S. He says nations like China, Russia, Turkey, Nigeria, and others have active operations to transport, house, and care for mothers until the passports arrive for their children born as U.S. citizens.

In this interview with Greg Corombos, Krikorian explains how many babies become U.S. citizens through this process, what can actually be done about it, and what the future of birthright citizenship looks like.