More than half a century ago, Republican President Dwight Eisenhower and a Democratic-majority Congress empowered millions of Americans to build an interstate highway system that became the envy of the world. Back then, our nation understood that investment in infrastructure was crucial to creating a better future. The interstate highway system was such a success that, 60 years later, both parties still fight over who gets credit for it. Today, our leaders often talk about big ideas but rarely summon the political courage to accomplish them.