California Governor Gavin Newsom said that he has initiated a lawsuit against Donald Trump’s administration challenging the president’s authority to impose tariffs. On his podcast posted today, Newsom said that the lawsuit will assert “that Trump does not have the unilateral authority to impose one of the largest tax increases in history.

California Governor Gavin Newsom sued to halt Donald Trump’s tariffs, setting up a high-stakes legal challenge to the president’s landmark effort to overhaul global trade.

Gov. Gavin Newsom on Wednesday announced a lawsuit alleging that President Trump lacks the authority to enact the international tariffs without the support of Congress.