Designates a day as "Prader-Willi Syndrome Awareness Day," recognizes the challenges of Prader-Willi syndrome (a rare genetic disorder that causes extreme hunger, obesity risk, and developmental and health complications), and praises advocates, families, researchers, and health professionals. It calls for public education, earlier and more accurate diagnosis, expanded research, development of new treatments and diagnostics, and identification of regulatory pathways to support drug development for rare diseases like Prader-Willi syndrome.