The terms human trafficking and sex slavery usually conjure up images of young girls beaten and abused in faraway places, like Eastern Europe, Asia, or Africa.
Authorities say the business netted more than million over 13 years beginning in 1993.
As with most worthwhile endeavors, however, the college experience may also present hidden risks. College men also experience sexual assault, albeit in smaller numbers.
Studies have shown that college students are most at risk of becoming involved in a sexually abusive situation. Strangers perpetrate only 20 percent of all reported rapes.
Palfrey contends that her escort service was a legitimate business.
"This was a very serious sin in my past for which I am, of course, completely responsible," Vitter, 46, said in a statement, which his spokesman, Joel Di Grado, confirmed to the Associated Press.