“Mexico would will join a pledge made earlier this year by Obama and Trudeau to reduce methane emissions by 40% to 45% by 2015.” (https://www.theguardian.com/environment/2016/jun/28/us-canada-and-mexico-pledge-50-of-power-from-clean-energy-by-2025)
Not ducking the Paris Agreement, but a retrospective goal would will might be more challenging.