Chuck Grassley, the top Republican on the Senate Judiciary Committee, said Tuesday that he wants an outside investigation to determine whether any White House staff members may have engaged in inappropriate behavior in Colombia.

CNN: Senators criticize military briefing on Colombia scandal

Chuck Grassley, the top Republican on the Judiciary Committee, was one of the first conservatives to publicly connect the bombings to the roiling immigration debate and question whether the attacks would suggest a need to slow down and re-examine immigration reform efforts.

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Among the most prominent of these are: Evangelical leaders such as Chuck Colson and Franklin Graham, top legislators, the Congressional Black Caucus, the NAACP, Episcopal and Catholic bishops, Southern Baptists, Jewish organizations and leaders and non- governmental organizations.

CENTERFORSECURITYPOLICY: Center For Security Policy

His decision, they said, came after their use was reviewed by top national security officials on a recommendation from Defense Secretary Chuck Hagel.

WSJ: North Korea Warned

Chuck Grassley, R-Iowa, the top Republican on the Senate Finance Committee, talked about the challenges ahead in pushing through presidential "fast track" trade promotion authority and in crafting a prescription drug benefit for Medicare, something GOP pollsters say is essential to complete before the next election.

CNN: Bush visits Senate GOP caucus

Chuck Grassley of Iowa, the committee's top Republican, joining Democrats in support.

CNN: Senate panel agrees to new legislation on guns

The other contenders not considered to be in the top tier are Ohio GOP Chairman Bob Bennett, Michigan RNC committeeman Chuck Yob, former RNC Co-chairman Jeanie Austin and California GOP Chairman John Herrington.

CNN: Race To Succeed Barbour Heats Up