Trump said the administration would begin eliminating the "full range" of agreements that had given Hong Kong a relationship with the us that mainland China lacked, including exemptions from controls on certain exports.
Last year, the U.S. was the WHO's largest contributor giving $893million (£723.5million).
Trump visited China in his first year as President.
Mr. Pompeo's finding amounted to a recommendation that the United States should reconsider its special relationship with Hong Kong. Trump may be mindful though that a more serious rupture with Beijing could upend his hard-fought Phase One trade deal with the world's second-largest economy, which he has counted on for economic benefit in major US farm states.
Trump insisted: "China's cover up of the Wuhan virus allowed the disease to spread all over the world, instigating a global pandemic that has cost more than 100,000 American lives, and over a million lives worldwide".
Kelly Craft, the US's United Nations envoy, said in a statement issued after the meeting that China "abhors transparency and only fulfills its global commitments and obligations when it's convenient".
Tedros, however, repeatedly praised China for "transparency" in its response to the outbreak-something experts and government officials around the world have emphasized as being the most lacking.
Sons of murdered Saudi journalist Khashoggi say 'forgive' killers
Another three were given jail terms totalling 24 years, while a further three were acquitted, prosecutors said. Khashoggi had been writing for the Washington Post newspaper and living in the U.S. before his death.
Secretary of State Mike Pompeo on Wednesday told Congress that the Trump administration would no longer consider Hong Kong to be separate under U.S. law, but it was up to Trump to spell out the consequences.
"That's a recipe for risk-taking and aggressive action that ought to worry us when we think of the military intervention by the People's Liberation Army in the event of protests in Hong Kong, but it also ought to worry us in connection with what may lie ahead in Taiwan", he warned.
China on Friday last introduced the draft of a controversial national security law in its Parliament to tighten Beijing's control over the former British colony Hong Kong, in what could be the biggest blow to the territory's autonomy and personal freedoms since 1997 when it came under Chinese rule.
The Hong Kong government has had a long history of working ties with U.S. counterparts, distinct from Beijing, with cooperation on counter-terrorism, trade and money laundering.
While Trump vowed to strip the city of certain trade privileges, saying Beijing's plan to impose a sweeping national security law on the semi-autonomous city was a "tragedy".
"We will take action to revoke Hong Kong's preferential treatment as a separate customs and travel territory from the rest of China", Trump said, adding that Washington would also impose sanctions on individuals seen as responsible for "smothering - absolutely smothering - Hong Kong's freedom".
President Trump announced on Friday that the USA would be fundamentally changing longstanding policies toward Hong Kong as a result of Chinese encroachment on the city's autonomy.
U.S. Rep. Richard Neal, D-Springfield, denounced the withdrawal. The WHO did not immediately respond to a request for comment on Trump's decision.