The principle that there is a presumption of innocence in favor of the accused is the undoubted law, axiomatic and elementary, and its enforcement lies at the foundation of the administration of our criminal law.
Coffin v. United States, 156 U.S. 432 (1895)
…the grand jury that returns an indictment naming a person as an unindicted conspirator does not perform its shield function (protecting the innocent) but does exactly the reverse. If the charges are baseless, the named person should not be subjected to a public branding, and if supported by probable cause, he should not be denied a forum.
United States v. Briggs, 514 F.2d 794 (5th Cir. 1975)