Missouri’s participation in a federal Medicaid expansion would be an economic boon for the state and even pay for itself, according to a new report commissioned by the Missouri Hospital Association and the Missouri Foundation for Health. Under the federal health law, states can choose whether or not to expand Medicaid, which provides health insurance to the poor and disabled. The federal government would fully pay for an expansion during the first few years, but many state lawmakers, like Republican house speaker Tim Jones, worry about the long-term costs.