Leading US business groups and lawmakers from both parties rallied on Tuesday behind an effort to scrap all restrictions on travel to Cuba, as momentum grows to alter Washington’s relationship with Havana.

The Senate bill, proposed by Byron Dorgan, a North Dakota Democrat, and backed by 20 other senators, including Republicans, as well as groups such as the US Chamber of Commerce, the American Farm Bureau and Human Rights Watch, would allow all US citizens to visit the island.