Kansas Congressman Todd Tiahrt of Goddard is one of seven members of a powerful House subcommittee under investigation for ties to an influential lobbying firm.
Ethics investigators are said to be looking at the ties between campaign contributions and earmarks that benefit clients of the lobbying firm, the PMA Group.
The subcommittee in question controls spending by the Pentagon.
The probe includes a review of the actions of the chairman of the Appropriations subcommittee on defense, John P. Murtha, a Pennsylvania Democrat long criticized for his devotion to earmarks and pork-barrel spending.
Tiahrt faces a tough 2010 U.S. Senate primary fight against fellow Republican Congressman Jerry Moran.
No word yet from Tiahrt’s office.