I am in argument with a neocon who is saying that "Article 1, Section 8, Clause 10" gives the US the right to interfere abroard when injustice happens, e.g. Darfur Genocide, which Paul was against.

Clause 10: To define and punish Piracies and Felonies committed on the high Seas, and Offences against the Law of Nations;
I am currently stumped. Please help form my response.