2---DISCRIMINATORY---China hates all CBAs because they are protectionist – risks trade war and turns ADV 1.
Clausing and Wolfram '23 [Kimberly A Clausing: UCLA School of Law; Catherine Wolfram: Haas School of Business @ University of California, Berkeley; "Carbon Border Adjustments, Climate clubs, and Subsidy Races when Climate Policies Vary"; National Bureau of Economic Research; June 2023; https://www.nber.org/system/files/working_papers/w31310/w31310.pdf; ror]
However, the foreign policy responses to a carbon border adjustment mechanism need not be accommodating. Not all governments abroad will be sanguine about the threat of foreign tariffs for example, China, India, Indonesia, and Thailand have suggested that they will oppose carbon border adjustment mechanisms on the grounds that they are protectionist and discriminatory (Böhringer et al. 2022). If some countries launch retaliatory actions in response, this risks a trade war of escalating tariffs, reducing the gains from trade on both sides and harming international cooperative efforts on both climate and other areas of joint concern. Given the many agenda items requiring international cooperation (including security, public health, and tax competition), the downsides of additional trade frictions are substantial, especially at a time when the international trading system is already under strain.