Voters should care about this bill because it outlines a specific economic consequence the U.S. would impose on China in the event of a military conflict over Taiwan. Currently, the U.S.-China income tax treaty simplifies international business and investment by preventing double taxation, which makes cross-border transactions more efficient and predictable. If this bill becomes law and an attack on Taiwan occurs, the treaty's termination could significantly increase the tax burden and administrative complexities for businesses and individuals engaged in trade and investment between the two nations.

This would make it more expensive and less attractive to do business with China, potentially impacting supply chains, corporate profits, and investment flows. It represents a predefined, strong economic response intended to deter aggression or, if deterrence fails, to exact a cost on China's economy. Without this bill, the U.S. would have to decide on a response if China attacks Taiwan, but it wouldn't be legally bound to terminate the tax treaty.