There are plenty of iconic trios — Larry, Curly and Mo. Robin, Maurice and Barry Gibb. Beyonce, Kelly and Michelle.
Add President Obama, Justin Trudeau and Enrique Peña Nieto to that list. This week at the North American Leaders Summit, the presidents of the U.S., Canada and Mexico became a full-fledged meme of beautiful, albeit awkward, proportions: the #3Amigos.