Rudy Giuliani earned the nickname "America's Mayor" for steering New York through the horror of the September 11, 2001 attacks (Angela Weiss)Forty years ago, Rudy Giuliani was the fearless Mafia-busting prosecutor whose aggressive use of racketeering laws brought down New York's Five Families. On Tuesday, he was fighting for his own freedom after being ensnared by the very legal strategy he had pioneered. The man once feted as "America's Mayor" for steering the US financial hub through the horror of the September 11, 2001 attacks has experienced a stunning fall from grace. But the effort to reverse Trump's clear election loss in 2020 appears in the end to have sealed Giuliani's downfall. 'Rudy Giuliani: He lied for Trump,'" he told The New Yorker in 2019.