In a pair of posts on his Truth Social site Trump railed against an influx of illegal migrants, even though southern border apprehensions have been hovering near four-year lows.

President-elect Donald Trump has made tariffs on foreign imports the central part of his economic plan for the country. Will they work?

While the reaction in US stocks was muted, global equities were rattled. Markets are wondering if Trump's threats are mainly a negotiating tactic.