One feel-good story making the rounds today is about the crews of Canadian air traffic controllers who are sending pizza to their American counterparts, working without pay during the now 24-day partial shutdown of the federal government...

Canada does it again! "Canadian air traffic controllers send pizza to US counterparts affected by shutdown" https://cnn.it/2spk0AV 

It's a nice gesture, one that is no doubt welcome for U.S. controllers, who're some of the few federal workers that are required to show up to work even if though they are not being paid. (Several air traffic controllers are suing the federal government over this.)
It's also a gesture that wouldn't be necessary if the U.S. had the same air traffic control system as our northern neighbor.
Back in the mid-1990s, Canada spun off its air traffic control system from a government-controlled and operated entity to the private, non-profit corporation NavCanada..."
Read on.