An estimated 2.6 million previously uninsured children have been served by Medicaid or the Children's Health Insurance Program since the CHIP Reauthorization Act was signed into law last February, the Department of Health and Human Services reported today. On the one-year anniversary, HHS Secretary Kathleen Sebelius announced a five-year campaign to challenge federal officials, governors, mayors, community organizations, tribal leaders and faith-based organizations to enroll the nearly 5 million children eligible for Medicaid or CHIP but not yet enrolled. As part of the challenge, HHS and the U.S. Department of Agriculture will encourage state Supplemental Nutrition Assistance Programs (formerly the food stamp program) to work with their state Medicaid and CHIP programs to share data and identify potentially eligible children.