TODD BENSMAN, Senior National Security Fellow, Center for Immigration Studies, former Department of Homeland Security official, Author,  "America's Covert Border War: The Untold Story of the Nation's Battle to Prevent Jihadist Infiltration," @BensmanTodd

Part 1: 

Todd Bensman: For every one illegal alien who is caught trying to enter the US illegally through the southern border, 3-7 migrants get through undetected

Polling shows that a majority of Americans want illegal immigrations at the US southern border to decline, not increase

Part 2: 

Proof of concept is becoming increasingly more clear in Europe as terror attacks committed by migrants become a reality

Bensman: There's an ideology within Islam that seeks to dominate the world and establish a caliphate

The Fence Act of 2006 was meant to build a wall at the US southern border to prevent terrorists from entering the US

Part 3: 

Traditionally, the US intelligence community has tagged immigrants coming from over 30 countires as Special Interest Aliens

ICE and other Department of Homeland Security agents are embedded in many Latin America countries hunting down smugglers

Part 4: 

Security officials in Panama deported over 40 alleged Jihadists, Mexico deported 19

Bensman argues that people on the Democratic left deny that terrorists  are entering the US through the southern border

Example: In 2017, a Somali immigrant crossed the US border, was detained and then released, after which he crossed into Canada, later ramming a truck into police officers