Kim McAllister, a Bay Area nurse for 31 years, knows she can recuse herself from a medical procedure with which she has a moral conflict. If a patient wants an abortion or if McAllister sees an end-of-life decision she might question, she can discreetly find another nurse who would help the patient in the way the patient seeks. But, like many Catholics, evangelicals and others, McAllister now worries that an Obama administration proposal to repeal "conscience" protections for health care workers will imperil her rights. "I took it for granted that my beliefs were protected," said McAllister, 51, of Hayward....