There is no evidence there will be any apocalypse in 2012; that is a myth. And there is also no evidence that any president, whether Obama or anyone else, could trigger such an event.
There will be no Apocalypse in 2012.See the Related Question.
Apocalypse 2012 - 2012 was released on: USA: 21 December 2012 (internet)
A apocalypse may happen but not in 2012.
Zombie Apocalypse - 2012 I was released on: USA: December 2012
Countdown to Apocalypse - 2012 was released on: USA: 9 November 2012
Apocalypse 2012 - 2012 I was released on: USA: 25 January 2012 (Trail Dance Film Festival)
Unknown Apocalypse - 2012 is rated/received certificates of: UK:12A
My Brother's Keeper - Or How Not To Survive The Apocalypse 2012 was released on: UK: August 2012 USA: October 2012
Air Jaws Apocalypse - 2012 TV was released on: USA: 12 August 2012
XFC 17 Apocalypse - 2012 TV was released on: USA: 13 April 2012
The cast of Apocalypse Girl - 2012 includes: David Gilbank as Scarrphace Rachael Pollard as Apocalypse Girl Paul Renhard
2012 Apocalypse - 2009 TV is rated/received certificates of: Australia:PG