House Committee on Oversight and Government Reform

The Committee on Oversight and Government Reform has legislative jurisdiction over the District of Columbia, the government procurement process, federal personnel systems, the Postal Service and other oversight matters across the government. (source)

http://oversight.house.gov/

Chairman:
Rep. Jason Chaffetz [R-UT3]
Ranking Member:
Rep. Elijah Cummings [D-MD7]
Republicans:
24
Democrats:
18

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
Jason Chaffetz
UT-3
Republican
Ranking Member
Elijah Cummings
MD-7
Democrat
National ...
Ron DeSantis
FL-6
Republican
Chair, Subcommittee on National Security
Interior, ...
Blake Farenthold
TX-27
Republican
Information ...
Will Hurd
TX-23
Republican
Chair, Subcommittee on Information Technology
Health ...
Jim Jordan
OH-4
Republican
Government ...
Mark Meadows
NC-11
Republican
Chair, Subcommittee on Government Operations
Intergovernmental ...
Gary Palmer
AL-6
Republican
Chair, Subcommittee on Intergovernmental Affairs
Justin Amash
MI-3
Republican
Rod Blum
IA-1
Republican
Matthew Cartwright
PA-17
Democrat
Lacy Clay Jr.
MO-1
Democrat
James Comer
KY-1
Republican
Gerald Connolly
VA-11
Democrat
Jim Cooper
TN-5
Democrat
Mark DeSaulnier
CA-11
Democrat
Val Demings
FL-10
Democrat
Scott DesJarlais
TN-4
Republican
John “Jimmy” Duncan Jr.
TN-2
Republican
Virginia Foxx
NC-5
Republican
Paul Gosar
AZ-4
Republican
Trey Gowdy
SC-4
Republican
Glenn Grothman
WI-6
Republican
Jody Hice
GA-10
Republican
Darrell Issa
CA-49
Republican
Robin Kelly
IL-2
Democrat
Raja Krishnamoorthi
IL-8
Democrat
Brenda Lawrence
MI-14
Democrat
Stephen Lynch
MA-8
Democrat
Carolyn Maloney
NY-12
Democrat
Thomas Massie
KY-4
Republican
Paul Mitchell
MI-10
Republican
Eleanor Norton
District of Columbia
Democrat
Stacey Plaskett
Virgin Islands
Democrat
Jamie Raskin
MD-8
Democrat
Dennis Ross
FL-15
Republican
Steve Russell
OK-5
Republican
Marshall “Mark” Sanford
SC-1
Republican
John Sarbanes
MD-3
Democrat
Mark Walker
NC-6
Republican
Bonnie Watson Coleman
NJ-12
Democrat
Peter Welch
Vermont
Democrat

There are 229 bills referred to this committee. Below find the top 100: