Another cover up at Hastert's office?

It seems that Republicans are addicted to cover ups. Every time you turn around, you find another one:

Two former House committee investigators who were examining Capitol Hill security upgrades said a senior aide to Speaker J. Dennis Hastert hindered their efforts before they were abruptly ordered to stop their probe last year.

The former Appropriations Committee investigators said Ted Van Der Meid, Hastert’s chief counsel, resisted from the start the inquiry, which began with concerns about mismanagement of a secret security office and later probed allegations of bid-rigging and kickbacks from contractors to a Defense Department employee.

Ronald Garant and a second Appropriations Committee investigator who asked not to be identified said Van Der Meid engaged in “screaming matches” with investigators and told at least one aide not to talk to them. Van Der Meid also prohibited investigators from visiting certain sites to check up on the effectiveness of the work, the investigators said.

Van Der Meid oversaw Capitol security upgrades for Hastert, R-Ill., and worked closely with the office that was charged with implementing them, the investigators said.