Why are Republicans Defending Roger*?

In watching the hearings today I noticed the questioning of Roger* was very different depending upon political affiliation. Republican representatives Burton and Foxx defended Roger* and gave him a few softball questions while the Democrats on the committee went after him. Clemens even said George Bush Sr. had spoken with him and said how wrong this investigation was. I don't know what Republicans are trying to gain by defending Roger. After the hearings McNamee's lawyers called Burton and Foxx's actions shameful and thought they acted the way they did because of Roger's personal lobbying. Watch some of the questioning below.