California Gov. Gavin Newsom said Wednesday that his state will file a lawsuit challenging President Donald Trump's authority to impose sweeping tariffs that have set off a global trade war. The suit will argue that Trump's use of the International Emergency Economic Powers Act to impose tariffs on Mexico,

Gov. Gavin Newsom on Wednesday is expected to announce a lawsuit arguing that President Trump lacks the authority to enact the international tariffs without the support of Congress.

State officials argue in a lawsuit that the U.S. Constitution expressly gives the authority to impose tariffs to Congress.