To amend title 31, United States Code, to suspend the issuance of $1 coins for a 15-year period, or until excess stockpiles are exhausted, and for other purposes.

Prevention of Wasteful and Unneeded Coins Act of 2011 - Amends federal law governing coins and currency to prohibit, for a 15-year period, the issuance of $1 dollar coins honoring each of the Presidents of the United States. Authorizes the Secretary of the Treasury to resume issuance of such coins if the demand for $1 coins exceeds the number of them held in reserve. Prohibits...