A group of 25 Democratic-led states has sued Donald Trump’s administration over its latest tariffs, claiming that the US president has exceeded his legal authority to implement the levies. These latest tariffs took effect just as the clock ran out on temporary tariffs that Trump had turned to after the Supreme Court struck down his flagship “liberation day” levies in a February ruling. The states that sued over the new tariffs, including Oregon and New York, all have Democratic attorneys general or governors. Trump, who argues that high tariffs will revive US manufacturing, last year overturned decades of Washington policy that favoured lower tariffs and ever-freer trade. The tariffs imposed in July affect more than 99 percent of US imports.