His curiosity got the best of him so one time he went into the pharmacy and talked to the pharmacist. He told the man who he was and this is what he was told.
The Canadian government controls what drugs can be sold at pharmacies and often there are effective drugs that the seniors need but are not allowed to purchase in Canada. So if residents live close to the border they can hop a bus, cross the border, give their prescriptions to the pharmacist, get a cup of coffee and wait till the prescription is filled.
If America goes to a single payer system and healthcare is controlled by the Government what border will you "get to cross" to get the medications you need?