The WHO is part of the UN so this falls in-line with the general attempts by
Putin Trump to destroy the United Nations, which is the only thing standing in the way of many Dictator's and Despot's plans around the World. Our own self-proclaimed despot has always had it in for the UN but much more so since they laughed at his speach last year when he attempted to proclaim himself the best President in US history.
As ridiculous as dismantling the UN might seem, defunding the WHO in the middle of a pandemic is simply insane but not at all surprising since the WHO's job is to set standards and guidlines and that would include how to handle the coronavirus and Trump already knows he doesn't want to listen to that one. Trump is also looking to blame the WHO for the Administration's failed response to containing the virus – he'll blame the Girl Scouts if he has to – anything but face the truth of his incompetence.
Trump claims that he read the WHO report on Jan 15th that said they had not yet confirmed human to human transmission of the virus but he also claims he did not read Peter Navaro's (White House Trade Adviser) Jan 29th memo TO TRUMP which said:
“The lack of immune protection or an existing cure or vaccine would leave Americans defenseless in the case of a full-blown coronavirus outbreak on U.S. soil,” Mr. Navarro’s memo said. “This lack of protection elevates the risk of the coronavirus evolving into a full-blown pandemic, imperiling the lives of millions of Americans.”
Navarro warned the coronavirus crisis could cost the US trillions of dollars and put millions of Americans at risk of illness or death. So, very, very clearly, Trump and his team KNEW the virus was coming and KNEW it was a huge threat way back in January but Team Trump kept on telling Americans through March 9th that there was nothing to worry about. These are Trump's actual quotes over 45 days of willful inaction that has cost America 25,000 lives already: