The president said Sunday that he will announce tariffs on all imported steel and aluminum on Monday but didn’t say when they’ll take effect.Donald Trump says he will impose 25% tariffs on all steel and aluminium imports into the US, including from Canada and Mexico.

The president said he would make the announcement on Monday, signalling yet another major escalation in his trade policy overhaul

Trump, meanwhile, is at Caesars Superdome in New Orleans on Sunday night to take in the Super Bowl. Trump picked the Kansas City Chiefs to beat the Philadelphia Eagles in an interview aired before the game on Fox.

Eagles demolishing record-chasing Chiefs in incredible Super Bowl display