S.Res. 15 (A resolution to improve procedures for the consideration of legislation and nominations in the Senate) was approved by the Senate on January 24, 2013.
S.Res. 16 (A resolution amending the Standing Rules of the Senate) was approved by the Senate on January 24, 2013.Sources: Changes to Senate Procedures at the Start of the 113th Congress Affecting the Operation of Cloture (S.Res. 15 and S.Res. 16) By Elizabeth Rybicki, Specialist on Congress and the Legislative Process, Congressional Research Service March 19, 2013 (R42996)