Republican Governor Charlie Baker of Massachusetts announced Friday that he will join a climate change initiative launched by several Democratic governors in the wake of President Trump’s decision to withdraw from the Paris climate agreement.

“As the commonwealth reiterates its commitment to exceed the emission reduction targets of the Paris Climate Agreement, today we join the U.S. Climate Alliance to expand our efforts while partnering with other states to combat climate change,” Baker said in a statement.

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The U.S. Climate Alliance was formed by the governors of California, Washington, and New York just hours after Trump announced on Thursday that he will pull the United States out of the global climate accord.

The coalition currently has no specific goals outside of reaffirming its member states’ commitment to the original objectives of the Paris agreement.

"If the President is going to be AWOL in this profoundly important human endeavor, then California and other states will step up,” said California’s Gov. Jerry Brown, a founding member of the Alliance.

Gov. Baker — who, with a 75% approval rating, is the most popular governor in America — said he expected other states to join the initiative “to protect the environment, grow the economy and deliver a brighter future to the next generation."