President Donald Trump said on Saturday he may consider rejoining the World Health Organization, days after ordering a U.S. exit from the global health agency over what he described as a mishandling of the COVID-19 pandemic and other international health crises.

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 announced the US would withdraw from the World Health Organization in January 2023 in one of his final acts as President, but has now hinted at a U-turn