Wildfire and Drought Relief for Ranchers and Farmers Act of 2012 - Amends the Federal Crop Insurance Act to direct the Secretary of Agriculture (USDA) to use Commodity Credit Corporation funds in FY2012 for the following supplemental agricultural disaster programs: (1) the livestock indemnity program; (2) the livestock forage disaster program; (3) the emergency assistance for livestock, honey bees, and farm-raised fish program; and (4) the tree assistance program.