[Jacqued]

On the other hand, one may contest the premise that a country has a right to refuse entrance to any individual.

I, for one, would rather live in a world where individuals are free to travel at will (protected by international agreements) than in one where only goods and money benefit from this kind of protection.

As someone who lives in a Schengen area country, I experience both, so maybe that influences my opinions : it seems quite retrograde and unbearable to forbid people to just travel as they wish.