Antitrust Enforcement by the FTC and DOJ is becoming too intrusive. Whatever happended to free markets?

After reading the policy analysis by The Cato Institute on antitrust enforcement, I was surprised that there was more regulation by the Obama administration than the Bush or Clinton administration. I was not surprised that there was more intrusive regulation occurring causing industry changes in the Obama administration. Very scary! The analysis overall was very interesting and thought provoking. The old theory from Adam Smith to let the invisible hand (i.e. free market, less government intervention) lead markets is vanishing.