President Donald Trump signed the Taiwan Assurance Implementation Act into law on Tuesday, setting off predictably divergent reactions from Taipei and Beijing. The legislation permanently extends existing requirements for the State Department to review and report on how it guides Executive Branch agencies in their dealings with Taiwan.

Taiwan Welcomes the Development

Taiwan President Lai Ching-te didn't waste time acknowledging the signing. Taking to X on Wednesday, Lai wrote that he "greatly appreciate[s] President @realDonaldTrump's signing of the Taiwan Assurance Implementation Act." He emphasized that the legislation underscores "the importance of #US engagement with #Taiwan."

Lai went further, promising Taiwan would "work even more closely with the US in all sectors to ensure regional peace, stability & prosperity."

Beijing Registers Its Objection

China's response came swiftly. Foreign Ministry spokesperson Lin Jian stated Wednesday that "China firmly opposes any form of official interaction between the US and China's Taiwan region, and that this position is consistent and clear."

Lin called on Washington to strictly follow the one-China principle and the three China-US joint communiqués, handle Taiwan-related issues carefully, stop official contacts with Taiwan, and avoid sending signals that could encourage "Taiwan independence" movements.

The Broader Context

Taiwan remains a flashpoint in US-China relations. The Chinese Embassy in Washington said back in August that Taiwan is the "most important and sensitive issue" between the two countries.

Interestingly, just days before signing this act, Trump himself advised Japan's Prime Minister Sanae Takaichi against provoking China over Taiwan, following her remarks that a Chinese attack on Taiwan might prompt Japan to take military action.