[sach1]

Canada directly borders France (St. Pierre et Miquelon) so if we ignore dragging in the geologists, that's as good an argument as any.

[selimthegrim]

Canada also directly borders Denmark via Greenland on Hans Island.

[ncruces]

Neither Greenland nor St. Pierre et Miquelon are part of the EU (they are “Overseas Countries and Territories”).

[PaulDavisThe1st]

So that would also include Dominica, which is also directly bordering France (Martinique).

The French and their globally disconnected departments ...

[ncruces]

Martinique is an “Outermost Region” (and so, part of the EU) unlike St. Pierre et Miquelon which is one of the “Overseas Countries and Territories” (not part of the EU).

[vitus]

Are we also considering Brazil for EU membership, then, as the country with the longest land border with France?

(French Guiana is governed by EU regulations, after all...)