President Obama asked Congress to spend $63 billion over the next six years on a new global health strategy that would reshape one of the signature foreign policy efforts of his predecessor, George W. Bush. Bush made combating global AIDS a centerpiece of his foreign agenda, creating the President's Emergency Plan for AIDS Relief. But the plan Obama outlined envisions a more far-reaching approach to global health that would focus not only on AIDS, but also on tropical diseases and other treatable and preventable illnesses that kill millions each year.