United States President Barack Obama.
In a pre-recorded video, Obama said Jay-Z's personal story is what Made In America - the concert series' tagline - means. He also urged concert-goers to vote, obvs.
Obama is up for reelection on Tuesday, November 6. Nicki Minaj endorsed Mitt Romney today in a new rap song, but it's safe to say we know which way Jay's voting.
Check out the Obama Jay-Z concert below:
