Jimmy Duncan [1] shows why he is a Repugnicant representing East Tennessee. Via Crooks and Liars [2]:

...the evidence is overwhelming — abstinence-only doesn’t reduce teen pregnancies, doesn’t reduce sexually transmitted diseases, and doesn’t even lead minors to abstain from sex.

Rep. John Duncan, a Tennessee Republican, said that it seems “rather elitist” that people with academic degrees in health think they know better than parents what type of sex education is appropriate. “I don’t think it’s something we should abandon,” he said of abstinence-only funding.

More [3] on this boondoggle from the "borrow and spend" GOP.