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 initially removed the U.S. from the WHO in 2020, but Biden reversed his action before it went into effect.

Public health experts warn that pulling out of WHO, which Trump attacked for its response to COVID-19, will leave Americans more vulnerable to health threats.

Experts have also cautioned that withdrawing from the organization could weaken the world’s defenses against dangerous new outbreaks.

How America's legacy of combating threats to global health security - including at home in the United States - is at risk.

The World Health Organization called on the US to reconsider a decision to leave the agency, suggesting the move could undermine global health security.

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 Trump is rolling back Biden healthcare policies, such as expansions to the Affordable Care Act – a move Democrats described as an "attack" on the federal program.

President Donald Trump has used one of the flurry of executive actions that he issued on his first day back in the White House to begin the process of withdrawing the U.S. from the World Health Organi

President Donald Trump is acting on his campaign promises at the fastest clip in modern memory — sending almost hourly shockwaves through the government, the legal system, the science community and around the world.

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 He also rescinded 78 Biden-era directives.