At the end of the 114th Congress in late 2016, Klobuchar had passed more legislation than any other senator. In February 2017 she called for an independent, bipartisan commission to investigate ties between Russia and President Donald Trump and his administration. Concern about Trump's ties to Russia increased after reports that his campaign officials had repeated contact with senior Russian intelligence officials before the 2016 United States elections. Klobuchar had already signaled her interest in U. S. –Russia relations in December 2016 when she joined Republican senators John McCain and Lindsey Graham on a trip to the Baltic states and Ukraine. She maintained high approval ratings throughout 2017, with an April 2017 Star Tribune poll placing her approval rating at 72%. In October 2017 Morning Consult listed Klobuchar among the 10 senators with the highest approval ratings, and a November 2017 KSTP-TV poll put her approval rating at 56%. An April 2019 Morning Consult poll found Klobuchar to be the third-most popular sitting senator, with a 58% approval rating and 26% disapproval rating, behind only Vermont Senators Bernie Sanders and Patrick Leahy.