Someone once told Devlin J. Schoop that a courthouse can never be closed. And in 1991, Schoop put this belief to a test as he snuck past police and war protesters in Madison, Wis. The young docket clerk and law librarian had been put on an Amtrak train from Chicago with an emergency pleading that had to be filed that day. Police told Schoop that the capitol and other government buildings were all closed because of the protests. “I ran over and I slammed the pleading against the door so the court security guards …