Legislation sponsored by US Senators Mike Lee, Ted Cruz, Amy Klobuchar and Richard Blumenthal that would breakup Google's ad business. Google dominates the online ad business in every aspect and segment of the business in the way Standard Oil dominated the oil business more than a century ago. Under Theodore Roosevelt that monopoly was broken up. Today Google operates in an environment where foundational anti-monopoly legislation has not been written for about 100 years says this report in WSJ. The Sherman Act of 1896, and the Clayton Act of 1914 form the foundations of anti-monopoly legislation. The Clayton Act was last updated in the 1970's. For 50 years no update has been done leaving the ground open for unfair advantage and conditions that are harmful to the American people say members of Congress sponsoring new legislation. The Cruz-Lee-Klobuchar-Blumenthal bill would prohibit companies processing more than $20 billion in online ads from participating in more than one part of the online ad ecosystem. Google network has $31.7 billion in online ad business. ...