How is the federal government responsible for health care?

Much of the federal election campaign’s focus has been on the U.S. But health care is always on the minds of Canadians. So what are the federal government’s responsibilities when it comes to health care—especially when six and a half million Canadians don't have a primary care provider? Amélie Quesnel-Vallée, a McGill professor and Canada Research Chair in Policies and Health Inequalities, explains.