Conversation so far:
What happened with Ben Carson on 2016?
On March 11, 2016, a week after Ben Carson ended his presidential campaign, he endorsed Trump, calling him part of the voice of the people to be heard.
What else did Ben Carson say about Donald Trump besides calling him part of the voice of the people to be heard?
At the press conference, Ben Carson said Donald Trump had a cerebral side
What did Ben Carson say about Donald Trump that drew criticism?
Ben Carson's subsequent comments that Americans would have to sustain Trump for only four years if he was not a good president drew criticism
What was Ben Carson's greatest accomplishment?
As a pioneer in neurosurgery, Ben Carson's achievements include performing the only successful separation of conjoined twins joined at the back of the head, among many others.
Did the government abolish the electoral college?
No

Question: what is the most important fact mentioned in the article?
Self-contained rewrite: What is the most important fact mentioned in the Ben Carson article regarding...