The Chicago Manual of Style, like both MLA and APA, defers to The Bluebook for legal citations.
Legal publications only need to be cited in your footnotes, not the bibliography (unless you have a secondary publication, like a book in which the legal publication appears, in which case you'd use the citation format for that publication).
If you get stuck or have any questions, drop by the Library Welcome Desk or send an email to owhlibrary@andover.edu.
Laws are initially collected in the United States Statutes at Large (Stat.), and later are incorporated into the United States Code (U.S.C.). These publications are broadly called reporters.
The full case name in the first citation will be plain text, but when you abbreviate for the shortened note, italicize.
You only need to add the abbreviated name of the court before the year if it's not clear from the reporter info.
What the heck is a "reporter"? It's not a journalist! It refers to the published "reports" that officially collect/publish the court decisions. When you see something like "588 U.S. 310," that's the reporter: volume 588 of the United States Reports series 310.
With URL:
US Supreme Court Cases:
With a Court Specified before Year: