“Once ObamaCare becomes fully effective in 2014, the cost of newly eligible Medicaid enrollees will be almost fully covered by the federal government through 2019, with federal financial support expected to be extended thereafter. But ObamaCare provides states with zero additional federal financial support for new enrollees among those eligible for Medicaid under the old laws. That makes increased state Medicaid costs from higher enrollments by ‘old-eligibles’ virtually certain as they enroll into Medicaid to comply with the mandate to purchase health insurance. This study estimates and compares potential increases in Medicaid costs from ObamaCare for the five most populous states: California, Florida, Illinois, New York, and Texas.”