'The decisive decade': Biden climate envoy John Kerry sounds alarm as US rejoins Paris climate accord
The United States formally rejoined the Paris climate accord on Friday, 30 days after President Joe Biden signed the mechanism to reenter the historic agreement.
While climate advocates cheered the decision, Biden's special presidential envoy for climate change, John Kerry, sounded the alarm about the need for urgent and ambitious action.
Kerry attacked former President Donald Trump, blaming his administration for being "inexcusably absent for four years."
-ABC News' Conor Finnegan