President Donald Trump’s decision to exit the World Health Organization means the U.N. agency is losing its biggest funder.

In a day-one executive order, President Donald Trump withdrew the U.S. from the World Health Organization for a second time.

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.

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.

President Donald Trump signed an executive order that would begin the process of removing the U.S. from the World Health Organization. Here's why.

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.

Public health experts say the United States’ departure could cripple the WHO’s operations or leave an opening for China to assume greater control over the agency.

The U.S. has traditionally been the most generous benefactor of the WHO. A Trump executive order to cut ties with the WHO could pose a threat to global public health.