Karen Vasquez, 44, walked out of jail in Cuba on Sunday, part of a deal brokered by the Vatican under which the Biden administration would loosen sanctions on the communist-run island, while Havana would release more than 500 people from its jails who are considered political prisoners by Washington.

A new executive order by President Donald Trump has placed a significant obstacle in the path of a deal to release prisoners held in Cuba. The order has stalled progress on the proposed political releases and the lifting of sanctions,