After having endured the most severe recession in the post-WWII era, we now are experiencing the weakest recovery. Why?

Is it because businesses are "uncertain"? If there has been so much uncertainty, why have businesses been so willing to purchase capital equipment and software?

Is it because U.S. businesses are so uncompetitive due to high taxes and regulation? If so, why have U.S. exports been so strong?

Link to read the full article: If Some Dare Call It Treason, Was Milton Friedman a Traitor?