Brenda Hummel and her 7-year-old daughter Andrea in their home near Des Moines, Iowa. Andrea was born with severe epilepsy and gets her health care through Medicaid.
Clay Masters/Iowa Public Radio
Tom Robichaud launched his business, Discreet Intervention, six months ago. Here, he works his dog in a vacant office building, hitting on a cylinder containing cocainelike drugs.
Pat Greenhouse/Boston Globe via Getty Images