Article 4, Section 2, Clause 3

No Person held to Service or Labour in one State, under the Laws thereof, escaping into another, shall, in Consequence of any Law or Regulation therein, be discharged from such Service or Labour, but shall be delivered up on Claim of the Party to whom such Service or Labour may be due.

1.William Blackstone, Commentaries 1:411--13, 1765
2.Sommersett's Case
3.Records of the Federal Convention
4.Debate in Virginia Ratifying Convention, 15 June 1788
5.James Iredell, North Carolina Ratifying Convention, 29 July 1788
6.An Act respecting Fugitives from Justice, and Persons Escaping from the Service of Their Masters
7.Murray v. McCarty
8.Commonwealth v. Holloway
9.Commonwealth v. Holloway
10.House of Representatives, Fugitives from Justice, 30 Jan. 1818
11.Wright v. Deacon
12.Missouri Constitution of 1820, ART. 3, SECS. 26--28
13.Butler v. Delaplaine
14.Joseph Story, Commentaries on the Constitution 3:§§ 1805--6, 1833
15.Jack v. Martin