Agostini v. Felton, 521 U.S. 203 (1997)
In Agostini v. Felton, the U.S. Supreme Court reversed its 1985 decision in Aguilar v. Felton, 473 U.S. 402 (1985) (and portions of its companion decision in School District of Grand Rapids v. Ball, 473 U.S. 373, 1985)...