Okinawa Gov. Takeshi Onaga was unable to gain the support of U.S. Sen. John McCain in talks over a vexed military question in the prefecture, but both said they would continue to discuss the issue.

On a visit to Washington, Onaga hopes to win over U.S. lawmakers, officials and think tank analysts by arguing it is better to move U.S. Marine Corps Air Station Futenma out of the prefecture than to relocate it from one site to a new one within Okinawa.

"It was meaningful that we confirmed we will continue dialogue," Onaga told reporters after the meeting at Congress on Tuesday.