A bipartisan group of senators wants to end travel restrictions on Americans seeking to go to Cuba, saying it would help foster change in the Communist island nation.
Current law generally bans travel to Cuba, although there are numerous exceptions.
Arizona Republican Sen. Jeff Flake said similar legislation to end the ban has cleared the Senate in the past.
The bill faces obstacles in the House and Senate.
In addition to Flake, Republican Sen. John Boozman of Arkansas and Democratic Sens. Dick Durbin of Illinois and Patrick Leahy of Vermont attended a news conference Thursday to unveil the measure.
President Barack Obama has announced plans to restore diplomatic relations with Cuba after more than 50 years. A trade embargo remains in effect and can only be reversed by congressional action.