When the U.S. established diplomatic relations with the
People's Republic of China in 1979, it also ceased to officially recognize Taiwan but continued to maintain unofficial relations with the island. In the same year, the U.S. enacted the
Taiwan Relations Act. In 2016, the Taiwan Travel Act was introduced to the U.S. Congress by Representative
Steve Chabot and Senator
Marco Rubio; members of the
House Foreign Relations Committee and the
Senate Foreign Relations Committee, respectively. In the letter, Ambassador Cui stated the legislation together with another bill () represent “provocations against China's sovereignty, national unity and security interests,” and “have crossed the ‘
red line’ on the stability of the
China-U.S. relationship”. US lawmakers perceived this wording, together with the Chinese threat of “severe consequences” as inappropriate interference and "out of line".
American responses A Democratic aide stated that issuing threats and setting “red lines” regarding U.S. domestic legislation was not a constructive way to build relations between the United States and China. The
Washington Post journalist Josh Rogin reported that congressional aides said other foreign embassies generally seek to influence Congress through relationship-building and persuasion, rather than threats, and that China's approach differed from this norm. Representative
Eliot Engel, then the ranking Democrat on the
House Foreign Affairs Committee, said that China had used similar tactics with other countries and expressed concern that such methods were being directed at the U.S. Congress. Some commentators argued that these actions may have backfired by encouraging Congress to take a stronger stance in response to what they viewed as coercive behavior. ==Legislative history==