Article 1, Section 8, Clause 14
SEE ALSO:
Generally 1.8.12; 1.8.13; 1.8.15; Amend. V
The Founders' Constitution
Volume 3, Article 1, Section 8, Clause 14, Introduction
http://press-pubs.uchicago.edu/founders/documents/a1_8_14s4.html
The University of Chicago Press