Cleveland was a committed non-interventionist who had campaigned in opposition to expansion and imperialism. He refused to promote the previous administration's Nicaragua canal treaty, and generally was less of an expansionist in foreign relations. Cleveland's Secretary of State, Thomas F. Bayard, negotiated with Joseph Chamberlain of the United Kingdom over fishing rights in the waters off Canada, and struck a conciliatory note, despite the opposition of New England's Republican Senators. Cleveland also withdrew from Senate consideration the Berlin Conference treaty which guaranteed an open door for U.S. interests in the Congo.