Rep. Jerry Lewis (R-CA) is the ranking member on the House Appropriations Committee. That's a very powerful position, especially considering the on-going federal investigation of Lewis. CREW has twice designated Rep. Lewis one of the most corrupt members of Congress.

Late yesterday, we learned that a top aide to Rep. Lewis has been subpoenaed in the on-going investigation of the Congressman:

A federal grand jury in Los Angeles has issued a subpoena for a House Appropriations Committee staffer as part of the ongoing probe of Rep. Jerry Lewis (R-Calif.), the ranking member of the powerful panel.

Greg Lankler, a staffer on the House Appropriations Committee's Defense subcommittee, was recently subpoenaed by a federal grand jury looking into Lewis, according to House insiders.

The subpoena is for both documents and testimony, although it is unclear at this point whether Lankler will cooperate. The matter has been forwarded to the House general counsel's office, which is still studying the subpoena.