Year after year, decade upon decade, the U.S. Senate's network of restaurants has lost staggering amounts of money -- more than $18 million since 1993, according to one report, and an estimated $2 million this year alone, according to another.

The financial condition of the world's most exclusive dining hall and its affiliated Capitol Hill restaurants, cafeterias and coffee shops has become so dire that, without a $250,000 subsidy from taxpayers, the Senate won't make payroll next month.

Sen. Dianne Feinstein (D-Calif.), chairman of the Rules and Administrations Committee, which oversees the operation of the Senate, said she had no choice.

In the past 10 years, only 20 new items have been added to the Senate menus. So rare are new entrees that last year's arrival of daily fresh-made sushi was treated in some senatorial quarters as if a new Nobu had opened in the Capitol dining room.