The President said he and his government were deeply concerned about whether his generosity had been used to the best advantage by WHO.
At a press conference in the White House, he said the organization had “failed in its basic duty and should be held accountable.”
Trump said the group had promoted China’s “disinformation” about the virus, which likely led to a larger epidemic than it would have happened.
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The deferral of payments is pending consideration of the US government warnings for the coronavirus and China.
Trump says the epidemic could have been contained and saved lives if the United Nations health agency had done a better job of investigating reports from China.
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The president said the world depends on WHO to work with countries to ensure that accurate information on health threats is shared in a timely manner.
He said the organization should be held accountable for its apparent shortcomings.
But he says the United States will continue to engage with the organization in pursuit of what it calls meaningful reform.
The number of confirmed coronavirus cases worldwide has reached nearly two million, according to a count by Johns Hopkins University.
Trump welcomed his response to the coronavirus on Monday at a bizarre press conference in which he showed a campaign-style video produced by the White House and ignored the 22,129 dead in the United States.
The president tried to shame people like the New York Times for questioning his government’s response to the pandemic with a video compilation celebrating his efforts.