By Kit Maher, CNN

President Donald Trump shows a rendering of the upcoming "UFC Freedom 250" event, as he speaks in the Oval Office on May 6.

When President Donald Trump first presented the idea of a UFC fight on the White House South Lawn, some people thought he was joking.

"We're going to have a UFC fight - think of this - on the grounds of the White House," Trump said in Iowa last July, teasing special events honouring America's 250th anniversary.

Fast forward about a year, and the idea is becoming a reality.