William Hubbs Rehnquist (October 1, 1924 – September 3, 2005) was an
American lawyerThe law of the United States consists of many levels of codified and uncodified forms of law, of which the most important is the United States Constitution, the foundation of the federal government of the United States...
,
juristThe United States federal courts make up the judiciary branch of federal government of the United States organized under the United States Constitution and laws of the federal government.-Categories:...
, and
political figureThe United States is a federal constitutional republic, in which the President of the United States , Congress, and judiciary share powers reserved to the national government, and the federal government shares sovereignty with the state governments.The executive branch is headed by the President...
who served as an
Associate JusticeAssociate Justices of the Supreme Court of the United States are the members of the Supreme Court of the United States other than the Chief Justice of the United States...
on the
Supreme Court of the United StatesThe Supreme Court of the United States is the highest court in the United States. It has ultimate appellate jurisdiction over all state and federal courts, and original jurisdiction over a small range of cases...
and later as the 16th
Chief Justice of the United StatesThe Chief Justice of the United States is the head of the United States federal court system and the chief judge of the Supreme Court of the United States. The Chief Justice is one of nine Supreme Court justices; the other eight are the Associate Justices of the Supreme Court of the United States...
. Considered a conservative, Rehnquist favored a conception of
federalismFederalism is a political concept in which a group of members are bound together by covenant with a governing representative head. The term "federalism" is also used to describe a system of the government in which sovereignty is constitutionally divided between a central governing authority and...
that emphasized the
Tenth AmendmentThe Tenth Amendment to the United States Constitution, which is part of the Bill of Rights, was ratified on December 15, 1791...
's reservation of powers to the states. Under this view of federalism, the
Supreme Court of the United StatesThe Supreme Court of the United States is the highest court in the United States. It has ultimate appellate jurisdiction over all state and federal courts, and original jurisdiction over a small range of cases...
, for the first time since the 1930s,
struck downUnited States v. Alfonso Lopez, Jr., was the first United States Supreme Court case since the New Deal to set limits to Congress's power under the Commerce Clause of the United States Constitution.-Background:...
an Act of Congress as exceeding federal power under the
Commerce ClauseThe Commerce Clause is an enumerated power listed in the United States Constitution . The clause states that the United States Congress shall have power "To regulate Commerce with foreign Nations, and among the several States, and with the Indian Tribes." Courts and commentators have tended to...
.
Rehnquist presided as Chief Justice for nearly 19 years, making him the fourth-longest-serving Chief Justice after
John MarshallJohn Marshall was the Chief Justice of the United States whose court opinions helped lay the basis for American constitutional law and made the Supreme Court of the United States a coequal branch of government along with the legislative and executive branches...
,
Roger TaneyRoger Brooke Taney was the fifth Chief Justice of the United States, holding that office from 1836 until his death in 1864. He was the first Roman Catholic to hold that office or sit on the Supreme Court of the United States. He was also the eleventh United States Attorney General. He is most...
, and
Melville FullerMelville Weston Fuller was the eighth Chief Justice of the United States between 1888 and 1910.-Early life and education:...
, and the longest-serving Chief Justice who had previously served as an Associate Justice.