Dr. Mark Dybul addresses a Senate hearing on global health issues in 2015. He was an architect of PEPFAR, the program created by President George W. Bush to stop the spread of AIDS.

Dr. Mark Dybul was an architect of PEPFAR, a program credited with saving 26 million lives. Now its future could be in jeopardy as Congress reviews the Trump administration's funding rescission memo.

A game changer The U.S. President's Emergency Plan for AIDS Relief, or PEPFAR, soon changed everything. President George W. Bush created PEPFAR in 2003 and reauthorized it in 2008.