The United States imposed trade restrictions on the Batista administration and sent an envoy who attempted to persuade Batista to leave the country voluntarily. With the military situation becoming untenable, Batista fled on 1 January 1959, and Castro took over. Within months of taking control, Castro moved to consolidate his power by marginalizing other resistance groups and figures and imprisoning and executing opponents and dissident former supporters. As the revolution became more radical and continued its marginalization of the wealthy, of landowners, and of some of those who opposed its direction, thousands of Cubans fled the island, eventually, over decades, forming a large exile community in the United States. Cuban Americans today constitute a large percentage of the population of the U.S. state of Florida, and constitute a significant voting bloc.