Canadian Prime Minister Justin Trudeau has only been in office for four months, but it's clear that he and President Obama are already on the same wavelength. Case in point: They seem to already have an inside joke about that whole moving to Canada thing.During a press conference on Thursday morning, as part of Trudeau's visit to the U.S., the pair exchanged knowing glances and a little giggle about the ongoing commentary by many liberal Americans who say they plan to move to Canada if Donald Trump is elected president.