Public health experts say U.S. withdrawal from the W.H.O. would undermine the nation’s standing as a global health leader and make it harder to fight the next pandemic.

Ooh, that’s a big one,” Donald Trump said Monday as he signed an executive order – one of dozens during his first hours as president – to withdraw the United States from the World Health Organization.

Trump signed a slew of executive orders that initiated the US withdrawal from the Paris climate accords and WHO, ordered troops to the border with Mexico, pardoned about 1,500 January 6 rioters and restarted permitting for natural gas export terminals. He also rescinded 78 Biden-era directives.