Question: when was the last time a us senator resigned
Answer: 2019-12-31; 2019-12-31; 31/12/2019; 12/31/2019; 31 December 2019; 2019 December 31; 2019 December, 31; 12-31-2019; 12 31 2019; 31-12-2019; 2019 12 31; 31 12 2019