U.S. President Donald Trump's massive tax and spending bill could help bring stability but it is not conducive to deficit reduction.

Canada is looking at potential investments in U.S. President Donald Trump's proposed Golden Dome missile defense shield, Prime Minister Mark Carney told reporters on Wednesday.

"I think it's opening a Pandora's box," said Victoria Samson, director of space security and stability at the Secure World Foundation think tank in Washington, referring to deploying missiles in spac...