Alongside Japanese Prime Minister Shinzo Abe, President Trump remarked on his upcoming summit with North Korean leader Kim Jong Un.
The Amphibious Rapid Deployment Brigade held a ceremony as the threat from China is said to be growing.
The meeting will take place about a month or so before Trump's landmark meeting with North Korea's Kim Jong Un.
"North Korea does have diligent people and rich resources," Abe said.
Russia and Japan have argued about a stretch of islands for over 60 years, but this is not stopping Moscow from raising military compounds on it.
The National Air and Space Intelligence Center says Pyongyang's CRBM rockets have a maximum range of 220 miles.
After its most recent test, the country's leadership is likely confident enough to enter into negotiations with the West.
North Korea boasted that the ICBM it launched last week could carry a nuclear warhead.
Pyongyang has one of the world's biggest ground armies.
North Korea has tested several ballistic missiles that landed off Japan's coast this year.
An editorial in the North Korean Central News Agency accuses Beijing of "raising tensions."
Pence and Abe agreed that they needed to persuade China to play a larger role in dealing with North Korea.
At hate rallies, many have called for Koreans to "get the hell out of Japan" and that foreigners should "all be massacred."
The U.S. president enjoys playing golf with world leaders, but Xi is unlikely to play when the pair meet in April.
Fukushima was the world's worst nuclear disaster since 1986.
Japan was the last G7 country to ban possession of child pornography.
China's foreign minister called on North Korea to halt nuclear activities and the U.S. to stop military drills.
The Washington and Florida meetings represent Abe's latest move to strengthen Japan's longstanding U.S. alliance in the face of China's rise.
Abe has reportedly called for officials to gather "tweetable" figures on Japanese companies' investment plans—and is planning to play a round of golf with Trump.
It would be the first abdication by an emperor in 200 years.
The Japanese PM's approval rating fell by 6 percent in a month.
The visit comes after Obama's historic trip to Hiroshima in May.