In Part One of our series, we considered the curious partisan political inversion around the proposed AT&T-Time Warner deal, as Donald Trump has come out noisily in opposition, while Hillary Clinton seems quietly supportive. In Part Two, we introduced our guest-expert, the Great Trustbuster himself, Theodore Roosevelt, who explained that the history of the Republican Party’s antitrust policy is more complex than most people realize. Now, in Part Three, we will press Roosevelt for a specific opinion on the AT&T-Time Warner deal, and he will expand on his quantity-vs.-quality theory of regulation.