Yeah, that's exactly what I say we should be doing.

Set the standard, and then ensure other countries honor that standard by penalizing offenders with tariffs.

Edit: Also, Donald Trump is well known as denier of climate change, so it's dishonest to frame his tariffs against China as a positive action for those who want to prevent climate change. China knows Trump doesn't give a shit about pollution, so they will not correct for it, which means the additional taxes have no effect on addressing climate change.

Macron deserves no defense. Please attack his hypocrisy as you please.