Washington ? British lawmaker George Galloway denounced U.S. senators on their home turf Tuesday, denying accusations that he profited from the U.N. oil-for-food program and accusing them of unfairly tarnishing his name.

Sen. Norm Coleman, R-Minn., questioned Galloway’s honesty and told reporters, “If in fact he lied to this committee, there will have to be consequences.”

Galloway’s appearance was an odd spectacle on Capitol Hill: A legislator from a friendly nation, voluntarily testifying under oath, without immunity, at a combative congressional hearing where neither side showed much pretense of diplomatic niceties.

“Now, I know that standards have slipped over the last few years in Washington, but for a lawyer, you’re remarkably cavalier with any idea of justice,” Galloway told Coleman, chairman of the Homeland Security and Governmental Affairs investigation subcommittee.

He then accused Coleman of maligning his name before giving him a chance to defend himself and of using the oil-for-food investigation to hide the failures of U.S. policies in Iraq.

“Senator, this is the mother of all smoke screens,” he said.

The panel is one of several congressional committees investigating allegations that Saddam Hussein manipulated the $64 billion oil-for-food program to get kickbacks and build international opposition to U.N. sanctions against Iraq imposed after Saddam’s 1990 invasion of Kuwait. The program allowed Saddam to sell oil and use the proceeds to buy food and other humanitarian items.

Coleman’s panel last week released documents that it says shows that Galloway and other international figures received valuable oil allocations from Saddam to reward them for their opposition to sanctions. The allocations could be resold for a profit. Among the officials identified besides Galloway were former French Interior Minister Charles Pasqua and Russian politician Vladimir Zhirinovsky, both of whom denied wrongdoing.

British legislator George Galloway testifies at the Senate subcommittee for Homeland Security and Governmental Affairs. Galloway was testifying Tuesday over allegations that he received millions of barrels of Iraqi oil for backing Saddam Hussein's regime.

Galloway vehemently rejected the accusations. “You have nothing on me, senator, except my name on lists of names from Iraq, many of which have been drawn up after the installation of your puppet government in Baghdad,” he said.

He said that Coleman’s panel based some of its accusations on the same fake documents used by The Daily Telegraph newspaper, which he sued for libel and won a $1.4 million libel judgment. The committee says it used different documents.