WASHINGTON -- A GOP lawmaker is accusing Pennsylvania Rep. John Murtha of threatening him with political retaliation after House Republicans unsuccessfully tried to cut off funding for the National Drug Intelligence Center in Johnstown.

Rep. Michael Rogers, R-Mich., on Monday will introduce a reprimand motion against Mr. Murtha, one of the most senior lawmakers in Congress and the highest-ranking House member in charge of defense spending.

Mr. Rogers said Mr. Murtha confronted him on the House floor Thursday night, vowing to block federal money for his district, according to a draft of the motion.

"I hope you don't have any earmarks in the defense appropriation bill because they are gone and you will not get any earmarks now and forever," Mr. Murtha allegedly told Mr. Rogers in a "loud voice." He referred to the pet projects lawmakers often tuck into large spending bills.

"This is not the way we do things here," Mr. Rogers replied. "Is that supposed to make me afraid of you?"

"That's the way I do it," Mr. Murtha said.

Mr. Murtha, who chairs the House Defense Appropriations Subcommittee, was unavailable for comment yesterday.

"The committee and staff give every Democrat and Republican the same consideration," his spokesman, Matthew Mazonkey, said in an e-mail message. "We have extensive hearings and every request is given careful consideration. We will continue to do just that."

With Democrats in control of the House, Mr. Rogers' reprimand has little likelihood of success. But it is an opportunity for Republicans to try to embarrass Mr. Murtha, who has become a lightning rod for GOP criticism because of his efforts to end the Iraq war.

The dispute also has focused attention on the NDIC, a federal agency that helps the Justice Department coordinate intelligence-gathering in the fight against illegal drugs.

On May 11, Mr. Rogers tried to remove $23 million for the agency from the 2008 intelligence spending bill. A statement from House Minority Leader John Boehner cited a House committee report from last year, calling the NDIC an "expensive and duplicative use of scarce federal drug enforcement resources."

Yet Republicans, who lost control of Congress last year, couldn't muster enough support to cut the money.

Mr. Murtha used his political clout to bring the NDIC to Johnstown in 1993.

"Because that's where I wanted it," he told reporters at a ribbon-cutting ceremony that year, joined by then Attorney General Janet Reno.

Mr. Murtha has fought off other efforts to cut funding for the agency. It is now one of the largest employers in Johnstown, the heart of his district.

"We are a nation at war, and when we find wasteful spending we must stop it. This comes down to a choice between spies catching terrorists or pork barrel spending in a congressional district," Mr. Rogers said in a news release. "We can't allow members to be threatened and intimidated when they stand up to protect hardworking taxpayers' money."

Mr. Rogers is accusing Mr. Murtha of violating House rules that prohibit trading votes for earmarks. His draft motion reads: "Mr. Murtha has been guilty of a violation of the Code of Official Conduct and merits the reprimand of the House."

A reprimand by the full House is rare and largely symbolic. According to the Ethics Committee's Web site, the last such successful vote occurred more than a decade ago, after an investigation into former House Speaker Newt Gingrich's use of tax-exempt donations to fund two college courses that he taught. He agreed to pay $300,000 to cover the investigation's costs.

Mr. Rogers hasn't asked the Ethics Committee to investigate Mr. Murtha.