Rob Carr/Getty Images
President's Day is here!
In honor of the holiday, we took a look back at celebs like Beyoncé, Jay Z, Katy Perry, and more who have met up with President Barack Obama and past presidents George W. Bush, Bill Clinton, Ronald Reagan and Richard Nixon at the White House and beyond.
See stars like activist-musician Bono who have teamed up with presidents on issues such as AIDS awareness, debt relief and development.
Check out dozens of your favorite stars in action for worthy causes and photo ops!