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.

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 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.

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

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.

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.

U.S. President Donald Trump has signed a blizzard of executive orders and taken other actions since being sworn in on Monday on scores of issues that could have an impact on the lives of millions of Americans and non-citizens.

He could turn his rash action into a negotiation that might strengthen global health.

President Donald Trump's initial executive orders target previous efforts to reduce health care costs, pandemic preparedness, and international partnerships, showing a stark contrast to the Biden administration.