North American Business Headlines at 6:20 a.m. EST

How a Trump tariff could sideswipe US auto industry

Philadelphia bars employers from requesting salary history

Federal judge swats Aetna-Humana insurer combo

Samsung details causes of Note 7 fires but questions remain

Global stock indexes mixed as Trump uncertainties mount

Trump adviser: Canada well positioned for NAFTA negotiation

EU-Canada trade deal clears big hurdle in EU parliament

NJ Transit resumes service after storm delays

Push to save Pacific Rim trade deal after US exits TPP pact

Yahoo's 4Q shows modest strides amid security breach fallout