Article 3, Section 1
Document 3
Delaware Declaration of Rights and Fundamental Rules, sec. 22
11 Sept. 1776Sources 34022. That the Independency and Uprightness of Judges are essential to the impartial Administration of Justice, and a great Security to the Rights and Liberties of the People.
The Founders' Constitution
Volume 4, Article 3, Section 1, Document 3
http://press-pubs.uchicago.edu/founders/documents/a3_1s3.html
The University of Chicago Press
Sources of Our Liberties. Edited by Richard L. Perry under the general supervision of John C. Cooper. [Chicago:] American Bar Foundation, 1952.