After their Oval Office encounter under the glare of the TV lights, Prime Minister Mark Carney and his U.S. counterpart retreated to the Roosevelt Room for a working lunch on Tuesday. Much of the mealtime chatter was about foreign policy issues,

A meeting between the leaders of Canada and the United States is not usually considered a high-stakes showdown.

Carney quipped that he appreciated that reporters "couldn't tell what was going through my mind" as Trump told Canadians they should become part of the U.S.