Obamacare applies to health insurance and not child support. In Florida, child support is owed until the child reaches the age of 18. If the child turns 18 and has not graduated from high school, then child support can continue until the child graduates or reaches the age of 19, which ever comes first. There is no obligation to support adult children (over the age of 18) and this includes paying for college, or health insurance. Obamacare would allow children to continue to be covered on their parents insurance to age 26, but does not require parents to pay for it. To do so would place federal law in direct conflict with Florida State law.