As the result of a four year joint project between the Census Bureau, the Internal Revenue Service, and the Social Security Administration, the LEHD Program has created an enhanced SIPP file that links a subset of SIPP variables to ad- ministrative earnings and benefits data. We have reviewed this file for disclosure risk and here present our results to the Census Disclosure Review Board. We believe that the procedures we used to create the synthetic data conform to the Census Bureau’s disclosure avoidance requirements and request that the DRB grant permission for the file release.