This paper examines changes in states' average income eligibility thresholds for children, pre- and post-CHIP. The report finds that states with the lowest level of coverage prior to CHIP have expanded income eligibility thresholds the most. States with a higher proportion of low-income uninsured children have increased their income eligibility thresholds to a greater degree than states with smaller percentages of uninsured children. States with higher per capita personal income have raised eligibility thresholds more than states with lower per capita income. States that experienced the greatest increase in federal matching rates expanded eligibility the most. And, states in the Northeast have increased eligibility more than states in other regions of the country.