WASHINGTON - Republican Rep. John Sweeney's attendance at a beer-drinking, college fraternity party has drawn criticism from Democrats who accused the New York lawmaker of using poor judgment. "What is a 50-year-old congressman doing at a frat party at 1 in the morning cavorting with students 30 years his junior? Teaching them how a bill becomes a law?" Blake Zeff, a spokesman for New York Democrats, said Friday.