MIAMI — A group of senators, Cuban-American politicians, exile organizations, and members of the island’s opposition asked President Joe Biden Wednesday to condition any eventual negotiation with Cuba on improvements in human rights and political freedoms. Cuban-American Sen. Bob Menendez, D-N.J., the new chairman of the Senate Foreign Relations Committee, said that one of his priorities is to restore the promotion of human rights and democracy as fundamental pillars of U.S. diplomacy. “And that absolutely includes the policy of the United States towards Cuba,” he said in a video shown at an e...