The dollar rebounded sharply on Tuesday after plunging hours earlier as Donald Trump's first day back in the U.S. presidency brought mixed messaging on tariffs and highlighted investors' sensitivity to headlines about trade policy.

The president said he planned to put tariffs on America’s neighbors on Feb. 1, as he signed an executive order mandating a sweeping review of U.S. trade policy.

President Trump pumped the brakes on his plan to deliver wide-ranging tariffs as soon as he took office, slow-tracking and toning down changes to the U.S. trade system that figured as a