"We are very busy trying to finalise our agenda for the World Health Assembly", WHO spokeswoman Fadela Chaib told a United Nations briefing in Geneva on Tuesday, reffering to its ongoing virtual assembly.
On Capitol Hill, Democrats said that Trump's move was illegal given that Congress had already appropriated money to the WHO.
The letter states that the administration agrees to pay mandatory contributions to WHO.
The UNITED STATE might send out 10% of "what we have been paying over many years, matching much lower China payments", Trump composed, calling the strategy "just one of numerous concepts being considered".
In a draft obtained by a news outlet, it says that the USA government agrees to contribute the same amount as what China contributes.
The White House calls for "a universal review mechanism to publicly report on member state compliance with worldwide health regulations".
The disappointment of the US government is also due to the dishonesty of the World Health Organization and China for not reporting immediately as early as December past year the presence of the new coronavirus.
World Health Organization officials denied the claims and China has insisted it was transparent and open.
Zhao said the United States decision to stop contributing to the World Health Organization was a violation of its global obligations.
Tedros, who has always promised a review, told the forum it would come "at the earliest appropriate moment" and make recommendations for the future.
"Indeed, good news!" trump wrote.
Trump has accused China of covering up, while Australia and the European Union have called for more transparency in China's COVID-19 control efforts including an independent inquiry into the origins of the virus. March 11, the world health organization (who) declared the outbreak of the novel coronavirus pandemic. It was found out that Taiwan told the World Health Organization of the human-to-human transmission of the disease.