US President Donald Trump said on Monday he would impose a 100 per cent tariff on all foreign-made films, an unprecedented move that threatens to upend Hollywood’s global business model. Trump announced the measure in a post on his Truth Social platform, claiming US moviemaking is losing ground to international competition. However, it was not immediately clear what legal authority Trump would use to impose a 100 per cent tariff on foreign-made films. Trump had first floated the idea of a movie tariff in May but offered very little detailPhoto: APThe White House did not immediately respond to a Reuters request for comment on how the tariffs would be implemented. Warner Bros Discovery, Comcast, Paramount Skydance and Netflix also did not immediately respond to requests.