For what it is worth, it seems to me that most opposition to the Paris Agreement is predicated on mere ignorance to its contents and a visceral, categorical rejection of anything multilateral or international in nature, regardless of the details and benefits. (And given the considerable support for it by a broad range of stakeholders – from national security figures to big corporations, including major energy companies – the usual argument that such policies are inherently anti-business, or favor only idealistic environmentalists, simply do not wash.) It is anti-globalism for anti-globalism’s sake.
If folks actually read the Agreement – which most people had never heard of or had forgotten about until recently – they would find that it is explicitly nonbinding and hands-off with regards to how nations can go about mitigating climate change. In fact, it stipulates “nationally determined contributions” whereby every nation individually sets their own goals and how to reach them, whether through the free market, government programs, etc. Unlike its predecessors, the Paris Agreement furthermore places emphasis on “bottom up” solutions that favor working with private sector and civil society groups, something that opponents ostensibly favor. Ironically, these provisions were included in part to win over skeptics like the U.S. who criticized the binding nature of prior agreements such as the Kyoto Protocols.