The "nuclear option" was named by Trent Lott (R-Miss.) in 2003 and first seriously threatened by majority leader Bill Frist (R-Tenn.) in 2005. It got actually invoked by the Democrats in 2013, in the reverse situation: the Democrats had a majority but not a supermajority of the Senate, and a Democratic president.
The "nuclear option" was named by Trent Lott (R-Miss.) in 2003 and first seriously threatened by majority leader Bill Frist (R-Tenn.) in 2005. It got actually invoked by the Democrats in 2013, in the reverse situation: the Democrats had a majority but not a supermajority of the Senate, and a Democratic president.