While visiting the Philippines, Harris is making a stop at Palawan, an island bordering the South China Sea, where there have been ongoing territorial disputes between China and its neighbors.
South China Sea islands dispute
Manila says 220 fishing vessels believed to be manned by China's maritime militia were observed anchored side by side at the disputed Whitsun Reef earlier this month.
The move appears to be a show of strength meant to signal the new administration's determination to stand firm against China's steady encroachment in the strategic waterway.
A video for "One Sea" was posted by the Chinese Embassy in Manila in an effort to foster solidarity in the fight against COVID-19. But many Filipinos saw it as Beijing pressing territorial claims.
The vessel, China's second aircraft carrier and the first to be domestically produced, is expected to spend up to a year in sea trials before being handed over to the Chinese navy for commissioning.
The Wall Street Journal quotes U.S. officials as saying China has placed the jamming equipment on a reef in the disputed Spratly Islands.
The USS Carl Vinson, a nuclear-powered carrier, is expected to spend four days at the port of Danang at a time of tensions over China's expansion in the South China Sea.
The Navy assigned its 3rd and 7th fleets in the Western Pacific, as the United States shifts its focus to flashpoints in Asia.
Despite the president's harsh words on China in the past, the leaders appear friendly and say they will cooperate on North Korea and work toward a balanced trade relationship.