The U.S. Attorney for the Eastern District of New York argued in a court filing Friday that a significant sentence was warranted because the New York Republican’s “unparalleled crimes” had “made a mockery” of the country’s election system.

“From his creation of a wholly fictitious biography to his callous theft of money from elderly and impaired donors, Santos’s unrestrained greed and voracious appetite for fame enabled him to exploit the very system by which we select our representatives,” the office wrote.

Prosecutors also argued that Santos had been “unrepentant and defiant” for years, dismissing the prosecution as a “witch hunt” and refusing to resign from Congress as his web of lies was debunked.