“If the U.S. stays out of the Paris agreement, there will be consequences for American businesses with a global footprint, and even for some without… The lack of a plan to substantially (or entirely) eliminate net carbon emissions creates an unfunded liability for companies… [and] access to global capital, which might be choked off if investors go beyond merely encouraging companies to stick to environmental commitments and start demanding it.”

[COMMENTARY] I suspect the above issues were never considered by the Trump administration. Yet, they could be severe and negatively affect US corporate profits.
A Paris Exit Creates Climate Liability for U.S. Businesses, by Nathaniel Bullard, November 5, 2020, Bloomberg, USA.