Senator Lindsey Graham slammed Microsoft co-founder Bill Gates Wednesday for condemning President Donald Trump’s move to halt U.S. funding of the World Health Organization saying it “ignores overwhelming evidence of China bias and incompetence.”

“I have a lot of respect for Bill Gates and his work in the public health arena. The Gates Foundation, under Bill and Melinda’s leadership, has a reputation for investing in programs which are well-run and produce results.” Graham said, “However, Bill Gates’ decision to defend the performance of the WHO during the coronavirus crisis and current WHO leadership ignores overwhelming evidence of China bias and incompetence.”

Halting funding for the World Health Organization during a world health crisis is as dangerous as it sounds. Their work is slowing the spread of COVID-19 and if that work is stopped no other organization can replace them. The world needs @WHO now more than ever.

— Bill Gates (@BillGates) April 15, 2020

Gates took to Twitter Wednesday calling the President’s decision “as dangerous as it sounds.” Further, he defended the WHO saying “Their work is slowing the spread of COVID-19 and if that work is stopped no other organization can replace them. The world needs @WHO now more than ever.”

Gates, through his foundation, has donated millions of dollars to support the WHO’s efforts in mitigating the spread of COVID-19.

Although Graham took issue with Gates’ statement, he said that “If someone like Bill Gates were in charge of the WHO, I would gladly support increased funding.” However, Graham said he’s “lost all confidence in the current WHO leadership and capabilities.”

Graham said the President’s decision was the “right move” until the WHO changes leadership.