"If you focus on the fundamentals that allow, like Chicago, over the last five years, you know this, we've been the number one city for corporate relocations," Emanuel said. "Why? Because companies, in a period of tremendous uncertainty, are looking for who will have the talent and the certainty around that talent for the next 20 years? Who will have a transportation system, both public and aviation, that will give them the capacity to get everywhere in the world and get their workers to work conveniently?"