By Valerie Volcovici

BELEM, Brazil (Reuters) -California Governor Gavin Newsom has arrived in the Amazon city of Belem with a message for the COP30 summit: his state will continue to be a “reliable partner” on climate policy and green technology despite Washington’s abandonment of the effort.

A strident political foe of U.S. President Donald Trump, Newsom has for months been teasing a run for the White House in 2028. On Tuesday and Wednesday, he is expected to meet with officials from some of the 195 governments attending this year’s U.N. climate negotiations.

He has planned meetings with a series of subnational leaders, including the governor of Brazil’s state of Para, the location of the summit.

Though California is just one of 50 U.S. states, its economy is the world’s fourth-larges

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