Taking a page from Tom Cotton’s playbook, Senate Majority Leader Mitch McConnell is now warning foreign leaders not to sign on to the United Nations climate change pact, because the Republican Party will subvert any effort by the Obama administration to cut US greenhouse gas emissions.

“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,” McConnell said in a Tuesday statement.

McConnell has similarly warned states against complying with the EPA’s climate rule, saying it’s illegal and states should not enable the rule.

The insanity of the Republican Party just keeps getting worse.