New Delhi, April 24 -- Twelve US states have taken legal action against President Donald Trump's "immense and ever-changing" global tariffs, arguing that he unlawfully sidestepped Congress by issuing duties under an emergency economic law. The legal suit was filed on Wednesday in the US Court of International Trade in Manhattan.

The suit argues that Congress didn't grant the President the necessary authority to impose the tariffs and that national trade policy "now hinges on the president's whims rather than the sound exercise of his lawful authority."

Trump "has upended the constitutional order and brought chaos to the American economy," the group said in the complaint.

The suit comes from New York, Illinois, Arizona, Oregon, Colorado...