House Speaker Rep. Nancy Pelosi (D-CA) is expected to visit Taiwan as part of her ongoing tour of Asia, according to a senior Taiwanese government official and a US official. That's despite warnings from Biden administration officials, who are worried about China's response to such a high-profile visit. The stop -- the first for a US House speaker in 25 years -- is not currently on Pelosi's public itinerary and comes at a time when US-China relations are already at a low point.