Being a patient is getting harder in a strained and complex U.S. health care system

Tamika Davis, right, walks through MLK Park with three of her children, from left, Shanara, 3, Matthew, 11, and Lionel Jr., 2, in San Antonio, Thursday. As a cancer patient, she said a case manager set a book of available resources on her bedside table and did nothing else. Davis, a nursing professor, found the…