Capitol Hill Democrats had a bit of a booze problem last weekend. And no, we're not talking about White House Correspondents' Dinner parties.The National Democratic Club, the restaurant for members on Capitol Hill next to Democratic National Committee headquarters, had to shutter its bar last Friday after its liquor license expired for several hours.The club had failed to renew the license, operating the bar without the proper paperwork for a few hours Friday before having to empty the cupboards and tape off the bar in accordance with D.C.