PROMPT: Based on the articles "Biden Targets Big Business in Sweeping Executive Order to Spur Competition", "Meet Tim Wu, the Man Behind Biden's Push to Promote Business Competition" and "Joe Biden's Antitrust Paradox: Where's the Consumer Welfare" from the July 9, 2021 and July 12, 2021 issues of the Wall Street Journal, respectively, please respond to the following discussion questions:

1. What do you see as the key ideas behind Biden's increased antitrust enforcement efforts?
2. What criteria do you think the Department of Justice and FTC should consider in deciding whether to bring an antitrust case against a company like Google or Amazon?
3. Are big businesses necessarily bad? What are the pro's and cons associated with large businesses like Amazon, Facebook, Walmart?
4. What concerns does Robert H Bork Jr. (in the third article) raise about Biden's antitrust efforts? Are they valid or not? Discuss.