Welcome to the Wall Street Week newsletter, bringing you stories of capitalism about things you need to know, but even more things you need to think about. I'm David Westin, and this week we heard from special contributor Larry Summers of Harvard on the dramatic story of the US economy under President Donald Trump and from former Transportation Secretary Elaine Chao on what we need to do to fix the US air traffic control system. If you're not yet a subscriber, sign up here for this newsletter.