WASHINGTON — Democrats on Wednesday raged against a government funding bill that would provide taxpayer subsidies to risky Wall Street derivatives trading.

“The House of Representatives is about to show us the worst of government for the rich and powerful,” said Sen. Elizabeth Warren (D-Mass.) on the Senate floor. She urged her colleagues not to support a “deal negotiated behind closed doors that slips in a provision that would let derivatives traders on Wall Street gamble with taxpayer money and get bailed out by the government when their risky bets threaten to blow up our financial system.”