washington/havana u.s. government make tough wednesday americans visit cuba business country make good pledge president donald trump roll back democratic predecessor move toward warm tie havana restrictions take effect thursday aim prevent military intelligence security arm cuba communist government benefit american tourists trade white house say fill regulatory detail trump policy speech june republican president call tighten restrictions say cuban government continue oppress people former president barack obama make many concessions 2014 diplomatic breakthrough washington former cold war foe regulations include ban americans business 180 cuban government entities hold company tourism company list include 83 state-owned hotels include famous hotels old havana ernest hemingway erstwhile favorite haunt hotel ambos mundos well city new luxury shop mall measure hurt cuban people say cuba foreign ministry chief u.s. affairs josefina vidal say government revenue fund cuba free education healthcare systems speak reporters havana call list arbitrary regulations setback u.s.-cuban relations new rule criticize lax republican leaders favor hard line counterproductive agree obama rationale detente washington many decades isolate caribbean island fail force change cuban hotels list include run military-linked chain gaviota habaguanex republican senator marco rubio florida cuban-american say list fail go far enough omit company like gran caribe hotel group cubanacan tie cuban government democratic senator patrick leahy say regulations unfair cuba come trump fete beijing communist government country americans travel freely hypocrisy white house ideologues glare leahy say statement u.s. travelers still able make authorize trip cuba u.s.-based organization accompany u.s. representative group hard travel individually accord new regulations obama open travel many americans similarly restrict organize trip travelers need able show full-time schedule activities support cuban people show meaningful interaction go beyond merely stay room private home eat private restaurants shop private store u.s. official tell reporters conference call administration say keen support small private enterprises spring around country president raul castro reform largely state-controlled economy stay eat shop privately own place something want encourage want say alone enough official say however cubans fledgling private sector say trump administration hostile stance toward havana already hurt business put us serious danger frighten away american visitors look rent properties say norma hernandez rent room airbnb say business flourish last year thank surge u.s. visitors trump rollback obama open affect centerpiece detente restoration diplomatic tie open embassies havana washington business contract travel arrangements already place allow go ahead subject restrictions officials tell reporters list entities americans business include special development zone cuba mariel port cuba hop develop major caribbean industrial ship hub tax customs break national foreign trade council business lobby group washington call mariel restriction counterproductive would hurt cuban government initiative could potentially benefit cuban workers head educational travel company say still many legal avenues well commercial flight cruise ship u.s.-owned hotels tour providers enable americans visit cuba say new restrictions would hurt cuba private sector time economy already struggle u.s backtrack cuba could come bad time say collin laverty president cuba educational travel new u.s. government rule restrict travel trade cuba