Welcome to America’s post-World Cup hangover

We were all so happy when the World Cup was fun. And now… | Paige Vickers/Vox; Getty Images Just a few weeks ago, Americans were able to eat salad without the fear of liquid feces and breathe in air that didn’t taste like campfire ash. And — we were just really excited to watch some soccer.  One major concern at the outset was whether America’s foreign and strict immigration policies would impact the levity of the games, and, at worst, deny entry to people, and perhaps even athletes and…