40 U.S.C. § 6134

Firearms, fireworks, speeches, and objectionable language in the Supreme Court Building and grounds

It is unlawful to discharge a firearm, firework or explosive, set fire to a combustible, make a harangue or oration, or utter loud, threatening, or abusive language in the Supreme Court Building or grounds.

( Pub. L. 107–217 , Aug. 21, 2002 , 116 Stat. 1183 .)