U.S. Government Accountability Office (GAO) is known as "the investigative arm of Congress" and "the congressional watchdog." It investigates how the federal government spends taxpayer dollars. (Search for "Medicare/Medicaid" to locate reports, publications and federal rules.)
Health and Human Services Office of the Inspector General:
Search the Issues and Research section for information on long term care, FAQ's, and lists on states offering tax incentives for long-term care insurance. (Search for "Medicare/Medicaid" to locate reports and articles)
Provides a wealth of information on what various states are doing in the area of long-term care, (Search for "Medicare/Medicaid" to locate reports, legislative updates, testimony, etc.).
Studies issues, conducts oversight of programs, and investigates reports of fraud and waste. It publishes materials of assistance to those interested in public policies which relate to the elderly. (Click the Medicare and Medicaid tabs to access reports.)