President Obama "has done virtually all he can without an act of Congress by announcing sweeping changes to the U.S. sanctions on Cuba," said Lawrence Ward, an international business lawyer with the Dorsey & Whitney law firm.
"Obama has squarely placed the ball in the Congress’s court to engage in serious discussion on fully lifting the 50-year embargo."
Hufbauer said there remain important hurdles to that happening.
"Both trade and investment depend on reciprocal liberalization with the United States, across a range of sectors and measures, and this will take time," he said.
"Also, Cuba needs to compensate for past expropriation," he added.
The Fidel Castro-led communists who took power in 1959 seized millions of dollars' worth of real estate and other property from American owners in the process.
Copyright Agence France-Presse, 2014