Trump said his administration would "immediately' begin 'implementing' a tariff on foreign films, but the White House said a decision isn't final.

US president Donald Trump and Canadian prime minister Mark Carney faced off in the Oval Office and showed no signs of retreating from their gaping differences in an ongoing trade war that has shattered decades of trust between the two countries.

A White House spokesman said Monday that "no final decisions" have been made on whether to impose a tariff on foreign-produced films, but that all options are being explored. President Trump said on Sunday that he had authorized the U.