As promised, the master thread of all the major actions the Biden administration has taken to combat climate change:

Rejoined the Paris Climate Accords
Implementing plan to reduce emissions by 50 to 52 percent by 2030 from 2005 levels
Revoked Keystone XL permit

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— What Biden Has Done 🇺🇸 🇺🇦 (@What46HasDone) June 13, 2022