For almost five years now, President Obama has been making the argument that government "investments" in infrastructure are crucial to economic recovery. "Now we used to have the best infrastructure in the world here in America," the president lamented in 2011. "So how can we now sit back and let China build the best railroads? And let Europe build the best highways? And have Singapore build a nicer airport?"

In his recent economic speeches in Illinois, Missouri, Florida and Tennessee, the president...