Guam's governor has threatened to declare the Federated States of Micronesia's top representative persona non grata amid a growing diplomatic spat.
In recent weeks, Guam has sent several migrants convicted of crimes in the territory back to the Federated States of Micronesia on one-way tickets.
The Pacific Daily News reports Mr Calvo's actions stem from a letter from the FSM Consul-General, Robert Ruecho, indicating his government will no longer confirm if a convicted criminal is a citizen.
In a letter to the FSM's president, Peter Christian, Mr Calvo says he hopes the action will be reconsidered or Mr Ruecho will be declared persona non grata, or unwelcome in Guam.
However, Micronesian officials have said the issue of deporting FSM citizens is between it and the United States, because under the Compact of Free Association FSM citizens have free access to Guam.