WASHINGTON -- President Donald Trump is scheduled on Monday afternoon to speak at the White House about medical findings related to children, according to his official schedule. A White House official told ABC News to expect a "historic" announcement related to autism.

An official said the president will announce "historic progress" on his pledge "to address America's rising rate of autism." Trump is scheduled to speak at 4 p.m. ET.

White House press secretary Karoline Leavitt is also scheduled to hold a briefing at 1 p.m. ET on Monday, according to the White House.

See Full Page