A congressional hearing Thursday about Cuba’s emerging private sector exposed the political divide between Republicans and Democrats on Cuba policy, with U.S. Rep. María Elvira Salazar, a Cuban American from Miami, leading the charge against the enterprises, calling them “a government ruse.” Salazar, a former journalist who currently chairs the House Foreign Affairs Subcommittee on Western Hemisphere Affairs, immediately set the tone for the hearing by denying a request from Texas Democrat Joaquin Castro to allow California Democrat Barbara Lee to join the session. Salazar called Lee “a friend…