Citizens of Micronesia and the Marshall Islands can travel to the U.S. without visas under certain circumstances.
The U.S. State Department summarizes the rules applicable to citizens of Micronesia and the Marshall Islands, as follows:
Citizens of the FSM and the RMI by birth and those citizens of the former TTPI who acquired FSM or RMI citizenship in 1986 are entitled under the Compacts to travel and apply for admission to the United States as nonimmigrants without visas. However, admission is not guaranteed. Most grounds of inadmissibility under U.S. immigration laws, such as criminal convictions, are applicable.
If determined admissible under the Compacts, an FSM or RMI citizen may live, study and work in the United States. The United States has the right to set terms and conditions on the nonimmigrant stay of FSM and RMI citizens. At the present time, they are granted an unlimited length of stay, also referred to as “D/S” or “duration of status.”