Article 1, Section 8, Clause 10
Document 15
Case of Jose Ferreira dos Santos
2 Marshall's C.C. 493 C.C.D.Va. 1835
The Founders' Constitution
Volume 3, Article 1, Section 8, Clause 10, Document 15
http://press-pubs.uchicago.edu/founders/documents/a1_8_10s15.html
The University of Chicago Press