A senior
Democratic aide speaking on condition of anonymity said Monday that the office of U.S. House of Representatives Speaker
Nancy Pelosi had received Collins' letter of resignation, and that it would become effective Tuesday.
Collins, 69, is scheduled to appear in Manhattan federal that day to enter his guilty plea, court records show.
Collins' son, Cameron Collins, and another man, Stephen Zarsky, are also scheduled to plead guilty in the case on Thursday.