US House Speaker Nancy Pelosi said on Friday that China will not isolate Taiwan by preventing US officials from traveling there. She made the remarks in Tokyo, the final leg of an Asia tour highlighted by a visit to Taiwan that infuriated China.

Pelosi, the first House speaker to visit Taiwan in 25 years, said on Wednesday in Taipei that the US commitment to democracy in the self-governing island and elsewhere “remains ironclad.”

Pelosi and five other members of Congress arrived in Tokyo late Thursday after visiting Singapore, Malaysia, Taiwan and South Korea.