In the world of American legal scholarship, Seth Barrett Tillman is an outsider in more ways than one. An associate professor at a university in Ireland, he has put forward unusual interpretations of the meaning of the U.S. Constitution that for years have largely gone ignored — if not outright dismissed as crackpot.

But at 60, Professor Tillman is enjoying some level of vindication. When the U.S. Supreme Court considers on Thursday whether former President Donald J. Trump is barred from Colorado’s primary ballot, a seemingly counterintuitive theory that Professor Tillman has championed for more than 15 years will take center stage and could shape the presidential election.

The Constitution uses various terms to refer to government officers or offices. The conventional view is that they all share the same meaning. But by his account, each is distinct — and that, crucially for the case before the court, the particular phrase “officer of the United States” refers only to appointed positions, not the presidency.

Archive

The hearing is being live-streamed Feb 8th @ 10am ET.