What is at stake for Google ahead of its hearing on the Hill?

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The CEO of the largest search engine in the world is testifying before Congress today regarding user data and privacy practices. Ayman Mohyeldin discusses what we can expect from Sundar Pichai’s hearing. Weighing in: CNBC Senior Analyst Ron Insana, L2 Founder and CEO Scott Galloway, attorney Midwin Charles and NBC’s Dylan Byers.