When did Leahy first become president pro tempore of the Senate?
2012
2010
2015
2017
Answer
In 2012, Patrick Leahy became president pro tempore of the Senate, the first Democrat to hold the position since 1987 and the longest-serving president pro tempore in history, surpassing Strom Thurmond's tenure.
The Leahy Legacy Challenge: A Deep Dive into the Life and Career of Senator Patrick Leahy