“Everyday we see your heart and character inspiring all of us to give more of ourselves,” wrote the singer. “You are the leader to take us from where we are to where we need to be. You are the reason my daughter and nephew will grow up knowing that they can truly be anything they want to be.”
(You can see the actual hand-written letter at Beyonce.com.)
By the way, Beyoncé and Jay-Z held a fundraiser for Obama in September; they raised $4M.