Senate Committee on Banking, Housing, and Urban Affairs:
Subcommittee on National Security and International Trade and Finance

Chairman:
Sen. Mark Kirk [R-IL]
Ranking Member:
Sen. Heidi Heitkamp [D-ND]
Republicans:
4
Democrats:
3

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.