Lawmakers in the state Senate are set to vote on legislation that would expand Medicaid in Iowa. Debate on the proposal is scheduled to begin Monday afternoon. Democrats argue that expanding Medicaid would provide better health coverage to more low-income Iowa residents. Republican Governor Terry Branstad has opposed growing Medicaid, saying it is unsustainable for the federal government and has questioned the long-term cost for the state. Branstad has proposed revamping an existing health program for low-income residents that is funded through state and federal dollars.