President Trump said Thursday he is postponing the 25% tariff on most imports from Mexico for a month. As for Canada, Prime Minister Justin Trudeau said he welcomes indications that his country could also see a reprieve.

Anxiety has returned to Wall Street with markets poised to give back much of Wednesday’s gains, which were spurred by President Donald Trump’s one-month exemption for U.S. automakers on his 25% tariffs for Mexican and Canadian imports.