China says it has protested to the United States over a stopover by Taiwanese President Tsai Ing-wen during which she toured the National Aeronautics and Space Administration in Houston.
Tsai made the visit while returning from a trip to Paraguay and Belize, two of only 18 countries extending diplomatic recognition to Taiwan, which China claims as its own territory.
Chinese foreign ministry spokesman Lu Kang told reporters at a daily briefing today that Beijing would "always oppose any country providing conveniences and venues for relevant people from Taiwan to conduct such activities."