Trump argues that the Paris Climate Agreement imposes unfair economic burdens on the United States while letting other major polluters like China, Russia, and India off easy, suggesting that U.S. participation would lead to significant economic disadvantage without equally impactful contributions from these countries. While it's valid to scrutinize the economic impacts of international agreements and seek fairness, his characterization oversimplifies the agreement's provisions and the complex dynamics of global economic impacts and environmental responsibility, neglecting the broader benefits of global climate action and the principle of differentiated responsibilities.

1. post hoc ergo propter hoc • Trump tries to take credit for the "best environmental numbers":

...during my four years, I had the best environmental numbers ever.

It's not clear what numbers Trump had in mind, but greenhouse gases did go down in 2020 compared to 2019, and Trump seems to assume that because this happened after he was in office, therefore it was because of him being in office.

However, the improvement seems not to be because of anything Trump did. According to the EPA, the drop was due to the pandemic severely limiting travel and other aspects of the economy. (Around the same time, Trump was reversing dozens of rules limiting air pollution.)

2. straw man • Trump presents a picture of the cost structure of the Paris Climate Agreement that is likely a large exaggeration:

The Paris Accord was going to cost us a trillion dollars, and China nothing, and Russia nothing, and India nothing. It was a rip off of the United States. And I ended it because I didn't want to waste that money...

Trump may be thinking of a study from a conservative think tank that estimated a shrinkage of US GDP of $2.5 trillion from the Paris accord, over twenty years. Other estimates have come in as low as one fifth of that. Hits to GDP for China, Russia and India may be smaller, but they have smaller economies and produce much less pollution per capita. Considering these facts together, it seems that Trump is putting up an economic straw man version of the Paris Climate Agreement.