I’ve now been working in global health for 25 years. That’s as long as I was the CEO of Microsoft. In that quarter-century, I’ve seen one thing proven over and over: Rich countries like America save lives when they help provide vaccines, bed nets, and other lifesaving tools to the world’s poorest people. In fact, this health aid is one of the main reasons that the number of children who die every year has plummeted by more than half since 2000.

Unfortunately, the U.S. and other countries are cutting back on that support.

I recently submitted written testimony to Congress on the impact that these cuts have already had, and the damage they will do in the future. It’s a huge setback, but it’s not too late to reverse course. I recently wrote an op-ed in the Wall Street Journal urging Congress to do just that. I’m keeping up the fight to get this lifesaving funding restored so America can get back to saving lives.