Senate Committee on Commerce, Science, and Transportation:
Subcommittee on Surface Transportation and Merchant Marine Infrastructure, Safety and Security

The 115th Congress began at noon on January 3, 2017. Committee assignments for the new Congress have not yet been made. The committee membership information below is as of the end of the 114th Congress, on January 3, 2017.
Chairman:
Sen. Deb Fischer [R-NE]
Ranking Member:
Sen. Cory Booker [D-NJ]
Republicans:
9
Democrats:
9

The chairman is always selected from the majority party and the ranking member is the most senior member of the minority party. The majority party ensures it has a majority on every committee.

Chairman
Deb Fischer
Nebraska
Republican
Ranking Member
Cory Booker
New Jersey
Democrat
Ex Officio
Bill Nelson
Florida
Democrat
Ex Officio
John Thune
South Dakota
Republican
Richard Blumenthal
Connecticut
Democrat
Roy Blunt
Missouri
Republican
Maria Cantwell
Washington
Democrat
Steve Daines
Montana
Republican
Dean Heller
Nevada
Republican
Ron Johnson
Wisconsin
Republican
Amy Klobuchar
Minnesota
Democrat
Edward “Ed” Markey
Massachusetts
Democrat
Claire McCaskill
Missouri
Democrat
Jerry Moran
Kansas
Republican
Brian Schatz
Hawaii
Democrat
Dan Sullivan
Alaska
Republican
Tom Udall
New Mexico
Democrat
Roger Wicker
Mississippi
Republican