(CNN) Confusion abounded late Wednesday in the West Wing over President Donald Trump's impending trade announcement rolling out tariffs on steel and aluminum imports. White House aides had been told to prepare for a signing ceremony Thursday at 3:30 p.m. But one White House aide said Wednesday night that the event had been canceled -- because the policy was not yet finalized. As of late Wednesday evening, the tariff announcement was not listed on the White House schedule. She said the national security exemption would be on a "case-by-case" and "country-by-country" basis.

Source: CNN March 08, 2018 03:45 UTC