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 "Halki seminary"): The Halki seminary, formally the Theological School of Halki (Greek: Θεολογική Σχολή Χάλκης and Turkish: "Ortodoks Ruhban Okulu" ), was founded on 1 October 1844 on the island of Halki (Turkish: Heybeliada), the second-largest of the Princes' Islands in the Sea of Marmara.
Relevant evidence: Yes