Jazz Sexton was hired as a representative at the IRS toward the end of 2018. Her health insurance was being processed when the government closed. In limbo and without coverage, she was looking at a nearly $1,000 out-of-pocket cost for her antidepressant, Celexa. She didn't have the money. She weened herself off the medication, first cutting her remaining pills in half, then quarters, until she was out of them. "I was dizzy, things looked brighter to me," Sexton, 32, said. "I was having very...