Trump has created controversy by calling protesters "thugs", saying that protesters who gathered outside the White House on Friday would face the "most vicious dogs" and "ominous weapons", and earlier said that "when the looting starts, the shooting starts".
Trump vowed on Thursday to declare a national emergency in an attempt to fund his US-Mexico border wall without congressional approval, a step likely to plunge him into a court battle with Congress over constitutional powers.
Trump said on Twitter that the advisory would be administered by the governors of New York, New Jersey and Connecticut in consultation with the federal government.
Trump campaigned on the promise of keeping more jobs in the US, but reports said his supporters wore "Make America Great Again" hats that were made in China.
Trump and his trade hawks hope that China and other US trade partners will blink first because of the escalation given the US economic might and its oversized clout in the global economic and financial system.
Trump tweeted that he told Bolton Monday night his services were no longer needed at the White House and said Bolton submitted his resignation on Tuesday morning. Trump said that he "disagreed strongly" with many of Bolton's suggestions, "as did others in the administration."
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Trump on Sunday continued on Twitter that Mexico is doing "very little, if not NOTHING", to stop the flow of people across the southern border.
Trump also announced that two large insurers, Humana and Cigna, will waive co-payments and deductibles to ease financial burdens on families affected by the coronavirus.
Trump said he was waiting for the results so that "we can get to the bottom of this very soon" and that he would be making a statement about it at some point.
Trump announced on March 1 that the United States planned to impose a 25-percent tariff on steel imports and a 10-percent one on aluminum, as these imports threaten US national security.