Texas still hasn't expanded Medicaid. That's leaving a gap in coverage for hundreds of thousands.

In 2012, Tanya Walker took the $200 her father loaned her to see a doctor. She was in the aftermath of a divorce and needed a prescription for antidepressants, she said. But her doctor in Texarkana found signs of hypertension and prediabetes — problems Walker knew she could not afford to have. Although her five kids were covered under Medicaid, Walker was ineligible for the state program and had no health insurance.