JEFFERSON CITY, Mo. (AP) — A second lawsuit has been filed against a ballot proposal to expand Medicaid health care eligibility to thousands more low-income adults. Conservative advocacy group United for Missouri on Wednesday announced it’s suing the The limited-government group’s lawsuit against the Secretary of State’s office to take the measure off the Aug. 4 ballot. The limited-government group says the measure would expand who is eligible for Medicaid in Missouri but doesn’t include a source to pay for that. Americans for Prosperity-Missouri has filed a similar lawsuit. A spokesman for the campaign promoting expanded Medicaid eligibility says it will aggressively fight the lawsuits.