On Wednesday’s “Special Report,” libertarian-leaning Republican presidential contender Rep. Ron Paul took the “Center Seat” to be grilled by the program’s panel.

One of the topics of conversation dealt with Paul’s statement in a debate that a border fence might be used to keep people in, which Washington Post columnist Charles Krauthammer challenged.

“Any piece of territory large or small that is fenced in, and for the purpose of keeping people in, is by textbook definition a prison,” Krauthammer said. “Is the United States a prison?”

Paul responded that he was primarily concerned with the ease of people and financial resources moving across borders.