As of now... April 2, 2009, John (Jay) Rockefeller IV is the current Chairman of Senate Commerce Committee.
Carl Levin (D) is the chairman of the Senate Armed Services Committee.
Senate Commerce Committee
who is the chairperson of the commerce committee
In the Senate, the Senate Finance Committee holds jurisdiction of taxation. The forerunner of the Committee, the Select Finance Committee, was established during the fourteenth session of Congress. The structure of the current Senate Finance came about as the result of the Committee Legislative Reorganization Act of 1970.
The Chairman is Jeff Bingaman of New Mexico.
The Senate Foreign Relations Committee is composed of eighteen members, ten Democrats and eight Republicans. The present Chairman is Robert Menendez, a Democrat from New Jersey.
Sam Nunn
The Speaker of the House and the Majority Whip and the chairman of the Ways and Means committee in the House; the President of the Senate and the Majority Whip in the Senate and the chairman of the Senate committee that does the budget, guides this through congress.
Sen. John Kerry (D-MA) is the current Chairman as of Dec.29,2009.
The Chairman of the Appropriations Committee has power over all federal spending. The Senate Appropriations Committee is the largest committee in the U.S. Senate.
Committee on Commerce, Science, and Transportation.
You would likely belong to the Senate Committee on Commerce, Science, and Transportation, as they oversee matters related to infrastructure and transportation, which would include the construction of a new transcontinental railroad.