New York University law professor Melissa Murray lamented on Sunday that Trump attorney Rudy Giuliani is descending down "a death spiral of stupid" after the former New York mayor argued that Donald Trump did not break campaign finance laws by paying hush money to alleged mistresses during the 2016 campaign. While appearing on ABC News Sunday morning, Giuliani said that Donald Trump cannot be charged with campaign finance violations because paying off mistresses is not a campaign expense by definition. Murray first pointed out that Giuliani had been wrong to assert that "collusion" is not a crime. "Giuliani is correct that collusion [with Russia] is not a federal crime writ large," Murray said.