Salazar is a senator from Colorado.

CHICAGO, Illinois (CNN) - President-elect Barack Obama is set to tap Sen. Ken Salazar of Colorado as his nominee for secretary of the interior, two transition officials told CNN Monday.

CHICAGO, Illinois (CNN) - President-elect Barack Obama will hold the first meeting of his national security team on Monday in Chicago, according to a transition aide for the incoming administration.

Participants will include, among others, Vice President-elect Joe Biden, Defense Secretary Robert Gates, Secretary of State nominee Hillary Clinton, Attorney General nominee Eric Holder, Homeland Security Secretary nominee Gov. Janet Napolitano and Chairman of the Joint Chiefs of Staff Adm. Mike Mullen, according to a source who was briefed on the planning.

Sen. Hillary Clinton has been mentioned as a candidate for Obama's secretary of state, sources say.

WASHINGTON (CNN) - The Democratic Senate leadership is considering a new role for Sen. Hillary Clinton should she decide to remain in the Senate and not accept the rumored offer of a position in President-elect Barack Obama's Cabinet, a Democratic official told CNN Wednesday.

CNN reported last week that Clinton and Obama met to discuss the possibility of Clinton, Obama's chief rival for the Democratic presidential nomination, serving as secretary of state. Multiple sources told CNN that Clinton left the meeting with the impression that the job was hers if she wanted it.

Senate Majority Leader Harry Reid's motivation for considering a new role for Clinton at this time was unclear, although multiple Democratic sources said Clinton made it known to the leadership prior to her meeting with Obama that she wanted a new role.

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Peter Orszag is a veteran of the Clinton White House.

CHICAGO, Illinois (CNN) - President-elect Barack Obama has picked Peter Orszag, the head of the Congressional Budget Office, to head his Office of Management and Budget, a top Democratic source told CNN Tuesday.

Orszag, 39, is an expert on health care, pensions and Social Security policy.

A favorite of Clinton Treasury Secretary Robert Rubin, he and Rubin co-founded the Hamilton Project, an organization within the Brookings Institution focused on economic research and policy.

Jason Furman, Obama's economic policy director, took over the Hamilton Project when Orszag left for the budget office in 2007.

While at Brookings, Orszag also served as director of the Retirement Security Project and co-director of the Tax Policy Center, a joint venture with the Urban Institute.

Orszag worked at the Clinton White House as special assistant to the president at the National Economic Council and served on the Council of Economic Advisors.

Orszag is known in the halls of Congress for wearing cowboy boots with his business suit.

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Sources say Obama asked Clinton if she is interested in the secretary of state post.

WASHINGTON (CNN) - Multiple Democratic sources tell CNN that President Elect Barack Obama and Senator Hillary Clinton had a “serious discussion” Thursday to gauge Clinton’s interest in the post of Secretary of State, if she were offered it. Senator Clinton’s response is unknown, although multiple sources agree that Hillary Clinton was left with the impression that if she were interested in the post, it would be hers.

“There was a serious discussion to determine whether, if offered Secretary of State, she would accept it,” said a source close to the Obama transition.

In these circumstances, that source added, a president-elect does not meet with potential cabinet secretaries unless they are serious about making an offer.

Another source close to the Obama transition team told CNN, “this (asking Clinton to be Secretary of State) has been of great interest to Obama for awhile. You’ve got to assume that Hillary Clinton did not come to visit the city of Chicago.”

Over the course of the last 24 hours, sources close to Hillary Clinton have softened their one-time solid public position that she would not be interested in a cabinet position. Those sources now say that Hillary Clinton is clearly contemplating various ways in which she can serve the Obama Administration.

On Monday, Senator Clinton responded to a reporter’s question by saying, “I am happy being a Senator from New York, I love this state and this city. I am looking at the long list of things I have to catch up on and do. But I want to be a good partner and I want to do everything I can to make sure his agenda is going to be successful."

Another source close to the Obama transition team tells CNN that among the key details to be worked out with Clinton, should she express interest in the position, are issues of how her husband, former President Bill Clinton, will be able to continue his work with the Clinton Global Initiative without complicating Hillary Clinton’s work as Secretary of State.

Hillary Clinton watches from the stands as Bill Clinton speaks at the DNC.

(CNN) – CNN has learned from a Democratic leadership aide that Senate Majority Leader Harry Reid has asked Hillary Clinton to deliver the party’s weekly radio address this weekend in advance of the Republican convention.

Democrats from the House, Senate, national party and the Obama campaign rotate delivering the speech each week. This weekend is the Senate’s turn.

Clinton is expected to repeat many of the themes of her speech on Tuesday, highlighting party unity, said the Democratic leadership aide.