Donald Trump appointee Aileen Cannon, the Florida-based federal judge assigned to the Mar-a-Lago documents case, has been a frequent source of frustration to special counsel Jack Smith and his team at the U.S. Department of Justice (DOJ). Cannon has indefinitely delayed the case, and she recently rejected Smith’s request for a limited gag order against Trump. One of the many arguments that Trump and his legal team are making against Smith’s Mar-a-Lago case is that U.S. Attorney General Merrick Garland acted improperly by appointing him as special counsel — and therefore, the entire case is inv…