All grantees of BPHC-administered Section 330 primary care programs, including Community Health Centers, Migrant Health Centers, Health Care for the Homeless and Public Housing Primary Care, are required under the terms of their grant to report Uniform Data System (UDS) data, which then are analyzed by HRSA to ensure compliance with legislative mandates, report program accomplishments, and justify budget requests to Congress. The UDS also helps HRSA to identify trends and establish or expand targeted programs and identify effective services and interventions to improve access to primary health care for vulnerable populations.