(L/R) US Health and Human Services Secretary Robert F. Kennedy Jr., US President Donald Trump, and US media personality Joe Rogan listen as W. Bryan Hubbard, CEO of Americans for Ibogaine, speaks before Trump signs an executive order in the Oval Office of the White House in Washington, DC on April 18, 2026. The executive order aims to further US federal medical research and clinical trials for certain psychedelic drugs.certain psychedelic drugs. (Photo by Jim WATSON / AFP via Getty Images)

US media personality Joe Rogan looks on as US President Donald Trump signs an executive order in the Oval Office of the White House in Washington, DC on April 18, 2026. The executive order aims to further US federal medical research and clinical trials for certain psychedelic drugs.certain psychedelic drugs. (Photo by Jim WATSON / AFP via Getty Images)

US President Donald Trump speaks after signing an executive order in the Oval Office of the White House in Washington, DC on April 18, 2026. The executive order aims to further US federal medical research and clinical trials for certain psychedelic drugs.certain psychedelic drugs. (Photo by Jim WATSON / AFP via Getty Images)

US President Donald Trump speaks after signing an executive order in the Oval Office of the White House in Washington, DC on April 18, 2026. The executive order aims to further US federal medical research and clinical trials for certain psychedelic drugs.certain psychedelic drugs. (Photo by Jim WATSON / AFP via Getty Images)

US President Donald Trump speaks after signing an executive order in the Oval Office of the White House in Washington, DC on April 18, 2026. The executive order aims to further US federal medical research and clinical trials for certain psychedelic drugs.certain psychedelic drugs. (Photo by Jim WATSON / AFP via Getty Images)

(L/R) FDA Commissioner Marty Makary, Health and Human Services Secretary Robert F. Kennedy Jr., US media personality Joe Rogan, W. Bryan Hubbard, CEO of Americans for Ibogaine, and former Navy SEAL Marcus Lutrell applaud after US President Donald Trump signed an executive order in the Oval Office of the White House in Washington, DC on April 18, 2026. The executive order aims to further US federal medical research and clinical trials for certain psychedelic drugs.certain psychedelic drugs. (Photo by Jim WATSON / AFP via Getty Images)

US President Donald Trump speaks after signing an executive order in the Oval Office of the White House in Washington, DC on April 18, 2026. The executive order aims to further US federal medical research and clinical trials for certain psychedelic drugs.certain psychedelic drugs. (Photo by Jim WATSON / AFP via Getty Images)

FILE- This combination file photos show on left, President Donald Trump listening during a meeting with North Korean defectors where he talked with reporters about allowing the release of a secret memo on the F.B.I.'s role in the Russia inquiry, in the Oval Office of the White House, on Feb. 2, 2018, in Washington and on right, Pope Leo XIV arriving for his weekly general audience in St. Peter's Square, at the Vatican, on Aug. 6, 2025. (AP Photos/Evan Vucci and Gregorio Borgia, File)