The "Late Night" host called out the ridiculousness of Trump's ballroom being "top secret" because the president won't shut up about it.

The $400 million White House ballroom project faces a legal challenge.

The "Late Night" host called out the ridiculousness of Trump's ballroom being "top secret" because the president won't shut up about it.

Critics say a White House ballroom would be a "vanity" project for President Donald Trump. He and the Department of Justice say it's needed for security.