When the Mexican Congress approved the country's 2007 budget, it included an appropriation of 8.5 billion pesos allocated to provide non-contributive pensions to senior citizens. President Felipe Calderon wanted to introduce eligibility criteria that would ensure the new federally-funded pensions would go to poor seniors that would otherwise lack the means to sustain themselves. This case puts the reader in the shoes of Calderon's advisor, asking them to assess which targeting option would be best for the Mexican government, taking into account a wide range of criteria including targeting efficiency, financial feasibility, political viability, and administrative feasibility. The case provides a brief description of previous efforts to target the poor in Mexican social programs and data to evaluate three potential targeting options. Case Number 2011.0