At USD 40,000 a head, the fundraiser is extremely exclusive and will be held at Jay Z's swanky Chelsea hotspot the 40/40 Club, reported New York Daily News online.
In a message urging supporters to contribute USD 25 to the President's re-election campaign (for the chance to win tickets to the soiree), Knowles wrote, "I have had the honour of meeting President Obama and the First Lady a few times
