WASHINGTON (AP) - To undermine Fidel Castro, the United States must ease its four-decade-long embargo on Cuba, facilitate sales of U.S. agricultural goods and allow U.S. travel to the island, a bipartisan group of 40 members of the House contends. "For over forty years, our policy toward Cuba has yielded no results," said Rep. Jeff Flake, R-Ariz., a House International Relations Committee member. "Castro hasn't held free and fair elections, he hasn't improved human rights, and he hasn't stopped preaching his hate for democracy and the U.S. "I think it's safe to say that our current policy has failed," Flake...