The Framers knew presidential duties didn't include electoral vote counts

For a purportedly originalist Supreme Court, the majority opinion in Trump v U.S. was notably light on the long disquisitions on “history” that have become common in the court’s rulings. 

Chief Justice John Roberts, writing for the majority, leaned on what he labeled the “constitutional tradition” of separation of powers to establish the president’s immunity from criminal prosecution for “official acts.” 

Among these official acts, he concluded, was former President Donald...