U.S. President Donald Trump said Tuesday he again told some unnamed Canadian official that the country should consider joining the U.S. as the 51st state — returning to the annexationist rhetoric he used earlier in the year and subsequently dialed back after Prime Minister Mark Carney was elected. Speaking to senior military officials at an event in Virginia, Trump said the U.S. is developing the Golden Dome missile defence system and Canada could be covered by it if the country becomes part of the States. "Canada called me a couple of weeks ago. They want to be part of it....