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President Castro has urged the U.S. to end a five decades old economic embargo, saying it's done huge damage to Cuba. The embargo could only be lifted with the approval of Congress, which is controlled by the Republicans. They have traditionally opposed any such a move. President Obama said isolation had clearly failed and it did not serve anyone's interest to continue to push Cuba towards collapse. But the House Speaker John Boehner said relations should not be normalized until Cubans enjoyed freedom.