Treasury Secretary Jacob Lew, Transportation Secretary Anthony Foxx, Commerce Secretary Penny Pritzker and Director of the White House National Economic Council Jeff Zients convened an “Infrastructure Investment Summit” on September 9th to explore both the opportunities and impediments to greater private sector investment in infrastructure.  This high-octane group of Cabinet officials was joined by a veritable Who’s Who from the infrastructure financing community, CEOs representing some of the largest infrastructure agencies in the country, and industry thought leaders. Perhaps the best news is that this summit happened in the first place—it’s an explicit recognition by senior leadership across the executive branch of the fundamental link between infrastructure and economic development.