EU can defend against US tariffs, why ASEAN cannot defend themselves ?

EU can defend against US tariffs, why ASEAN cannot defend themselves ?

Singapore and Malaysia dare not defend themselves against US tariffs why they cannot come as ASEAN group and defend themselves against US tariffs ? this proves ASEAN is a useless entity that cannot defend against external threat ? below are the US tariffs brunei = 47% cambodia = 97% indonesia = 64% lao = 95% malaysia = 47% myanmar = 88% philippines = 34% singapore = 10% thailand = 72% vietnam = 90%