https://apnews.com/72160b7e4896754af13de5f0e182f73b > SAN FRANCISCO (AP) — Facebook's stock dropped almost 3% in regular trading after news reports suggested that the FTC may take antitrust action to prevent Facebook from integrating its disparate messaging apps. > The reports said the Federal Trade Commission may seek a court injunction that would block Facebook's “interoperability” plans for Facebook Messenger, WhatsApp and Instagram, which involves revising them to use the same underlying software.