Constitutional FAQ Answer #59
Q59. "I need help looking for where the Constitution implies slavery. I looked at Article 1, Section 9, Clause 1 of the Constitution. I need another example of the implied use of slavery."
A. When the Constitution notes "all other persons," it means slaves (see Article 1 Section 2). When it talks about the importation of persons (see Article 1, Section 9, Clause 1), it means the slave trade.
See also Article 4, Section 2.