Member Pay Reduction and Responsibility Act of 2012 - Amends the Balanced Budget and Emergency Deficit Control Act of 1985 (Gramm-Rudman-Hollings Act) to require that, if any sequestration under it takes effect for FY2013, the presidential order implementing the sequestration reduce the pay of the President, the Vice President, and Members of Congress by a percentage equal to the greater of 8.2% or the percentage by which accounts within the non-exempt, non-security category are reduced under the order.