Under what circumstance does McConnell’s message to foreigners to do less on climate change help America rhetorical question?

Tweet Slate has a good article on Republican politicians siding with America’s foreign rivals when Democrats run the executive branch, multiple times throughout the years. The latest version of this is Mitch McConnell’s advice to foreign countries that "Considering that two-thirds of the U.S. federal government hasn’t even signed off on the Clean Power Plan and 13 states have already pledged to fight it, our international partners should proceed with caution before entering into a binding, unattainable deal." Ignore for the moment that these international commitments are voluntary, not binding

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Under what circumstance does McConnell’s message to foreigners to do less on climate change help America rhetorical question?