Detained by TSA

In town for a conference, a director of Ron Paul's Campaign for Liberty is detained by TSA at the St. Louis airport because when asked to explain why he's carrying $4,700 in cash (it was proceeds from book and ticket sales at the conference), he asks the agents to tell him what law requires him to do so. He managed to surreptitiously record his conversations with TSA officers on a cell phone. The audio is infuriating.