The Obamas' absence at year's biggest wedding explained...
The reports that Chelsea Clinton's "Wedding of the Decade" costs $5 million are holding strong, and the A-list celebs on the guest list -- from Oprah Winfrey to Steven Spielberg -- just keep adding up. The wedding's most notable invitee, however, is reportedly passing on the day for Washington royalty...why isn't President Obama attending Chelsea Clinton's wedding?

We're investigating. We know that President Obama is slated to appear on Thursday's episode of The View, but now it's expected that instead of hanging around Manhattan for Saturday's early departure to Rhinebeck, Obama will cut out of New York after The View's taping.

Reports suggest that President Obama has decided to decline his invitation to the Clinton wedding because he doesn't want to raise hoopla and distract the crowd with his presence, and also because the security that's required to accompany him may be too much for the Clintons to handle (it's reported they've already spent $200,000 on security for the other high-profile guests).

READ: Chelsea Clinton's Super-Elite Wedding Guest List

How much will the Clintons miss the Obamas at their only child's wedding? The relationship between the two families means more than ever with Hillary Clinton's position as Secretary of State being one of Obama's most crucial and senior Cabinet members. The good news? Chelsea Clinton can expect a real nice gift.

READ: Chelsea Clinton's $5 Million "Wedding Of The Decade"