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 theological school is located at the top of the island's Hill of Hope, on the site of the Byzantine-era Monastery of the Holy Trinity.
Relevant evidence: No