Mueller's team has leveled multiple charges of tax and bank fraud against Paul Manafort, President Trump's former campaign manager, particularly pertaining to his political work in Ukraine.
But while Manafort is the one on trial, the prosecution has often been on the receiving end of Ellis' rebukes. The judge has lashed out at them for a variety of alleged missteps, from how they address him to how they've sought to portray the defendant.
Ellis has also cautioned the team about the high bar set for conviction; prosecutors have to prove Manafort knowingly violated bank and tax laws related to his political work overseas.
Here's a look at some of the more colorful comments Ellis has directed toward Mueller's team and key witnesses.