Remove the court or the jurisdiction

Error²Federal courts, Illinois courts21st and 22nd editions

A reporter whose title already names the court or the jurisdiction leaves it out of the parenthetical: United States Reports means the Supreme Court, so “(1990)”, not “(U.S. 1990)”.¹

1. 1R. 10.4(a) Federal courts; R. 10.4(b) State courts; B10.1.3 Court and Year of Decision. Tables: T10.1 U.S. States, Cities, and Territories.
2. 2An error: the rule in note 1 allows one form, and this is not it.