(CNN) The White House sought to project a message of stability on Wednesday about the US economy amid ongoing market volatility triggered in part by confusing signals sent in recent days by President Donald Trump and his top advisers.

Kevin Hassett, the chairman of the Council of Economic Advisers, told reporters Wednesday that Federal Reserve Chairman Jerome Powell's job is "100%" safe, despite Trump's vocal complaints about the central bank's decision to raise interest rates -- including in comments to reporters on Christmas Day.

Hassett instead blamed market volatility on "fundamentals," noting, "Growth in Europe has slowed; growth in Asia has slowed."

But he said the US economy continues to be strong.

"All the anecdotal info that we're getting is that the fundamentals remain extremely sound," Hassett said. "Christmas sales were through the roof."

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