From USA TODAY.

President Donald Trump is expected to make an announcement about autism during a Sept. 22 afternoon White House event that he has called one of the biggest in the “history of the country."

“I think you’re going to find it to be amazing,” Trump told a memorial rally for Charlie Kirk in Glendale, Arizona, on Sept. 21. "I think we found an answer to autism."

Trump is set to make an announcement at 4 p.m. with Health and Human Services Secretary Robert F. Kennedy Jr. and Dr. Mehmet Oz, administrator of the Centers for Medicare and Medicaid Services.