Tim Cook's political tightrope is fraying

Apple News is being questioned over alleged censorship.

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• Apple was hit with a warning letter from the Federal Trade Commission over its Apple News platform.
• FTC's Andrew Ferguson urged Apple to review its terms of service and the app's curation of articles.
• Ferguson cited reports that Apple News has promoted 'left-wing' news outlets over conservative ones.

Apple is caught in the Trump administration's crosshairs — this time over its news app.