That is a rumor.

Where is the report that the US president has discussed the possiblity of the trillion dollar coin in White House?  The proposal, which was originated in blogs, has a vanishingly remote chance of happening.  The White House press secretary Jay Carney responded to a dozen questions about the trillion-dollar coin at a news conference saying“There is no Plan B, there is no backup plan. There is Congress's responsibility to pay the bills of the United States,". “I have no coins in my pocket,” he later added.