Executive power is vested in the cabinet led by the prime minister; the Malaysian constitution stipulates that the prime minister must be a member of the lower house of parliament who, in the opinion of the Yang di-Pertuan Agong, commands a majority in parliament. The cabinet is chosen from among members of both houses of parliament and is responsible to that body.

The bicameral parliament consists of the Senate (Dewan Negara) and the House of Representatives (Dewan Rakyat). All 70 Senate members sit for 3-year terms, which are normally extended for an additional 3 years; 26 are elected by the 13 state assemblies, and 44 are appointed by the king. Representatives of the House are elected from single-member districts by universal adult suffrage. The 219 members of the House of Representatives are elected to parliamentary terms lasting up to 5 years. Legislative power is divided between federal and state legislatures.

The Malaysian legal system is based on English common law. The Federal Court reviews decisions referred from the Court of Appeal; it has original jurisdiction in constitutional matters and in disputes between states or between the federal government and a state. Peninsular Malaysia and the East Malaysian states of Sabah and Sarawak each have a high court.
The federal government has authority over external affairs, defense, internal security, justice (except civil law cases among Malays or other Muslims and other indigenous peoples, adjudicated under Islamic and traditional law), federal citizenship, finance, commerce, industry, communications, transportation, and other matters.

Malaysia maintains an embassy in the U.S. at 3516 International Court, Washington, DC 20008, tel. (202) 572-9700; a Consulate General in the Los Angeles World Trade Center, 350 South Figueroa Street, Los Angeles, CA, tel. (213) 621-2991; and a Consulate General at 140 E. 45th Street, New York, NY 10017, tel. (212) 490-2722.