US District Judge Aileen Cannon, who’s presiding over Donald Trump’s classified documents case in Florida, has few restraints on her. As a judge nominated by the president—who’s the defendant—and confirmed by the Senate, she enjoys the independence of life tenure despite having little trial experience. So when she received the assignment, and two more veteran judges tried to get her to turn it over to a colleague, she was able to tell them no. It turned out that Cannon, whose rulings have drawn widespread criticism and reversals from above before the trial has even begun, wanted to take Trump’…