Question: What is the name of this American politician and member of the Democratic Party who serves as the senior United States Senator from Maryland, born in October 1943, and who noted that there is an international campaign to reopen the Halki Seminary?
Sentence (from "Dick Durbin"): He has been the Assistant Democratic Leader (whip), the second highest position in the Democratic Party leadership in the Senate, since 2005, serving as Minority Whip from 2005 to 2007, Majority Whip from 2007 to 2015, and Minority Whip again since 2015.
Relevant evidence: No