WASHINGTON, DC - APRIL 18: Press gather with U.S. President Donald Trump in the Oval Office after signing an Executive Order April 18, 2026 in Washington, DC. The executive order directs the Food and Drug Administration to issue new guidance on the use of psychedelic drugs intended for clinical trials for U.S. veterans suffering from Post Traumatic Stress Disorder. 2 (Photo by Tasos Katopodis/Getty Images)