Some experts are worried about the cost and timeline of U.S. President Donald Trump's proposed "Golden Dome" missile defence system, which Canada has expressed interest in joining. They also say it could set off a space-based arms race that would escalate global tensions.

The White House’s $175-billion plan to protect the U.S. from nuclear annihilation will probably cost much more—and deliver far less—than has been claimed, says nuclear arms expert Jeffrey Lewis

JPMorgan Chase Chief Executive Jamie Dimon said on Thursday U.S. President Donald Trump's massive tax and spending bill could help bring stability but it is not conducive to deficit reduction.