Originally Posted by
gglave
Isn't this what the visa process is for? Pre-screening these individuals? Once they have the visa, hasn't this already been addressed? The times I've needed a visa to visit a nation, once I arrived it was just a rubber-stamp because the approval process had already occurred.
In theory, yes. Unfortunately, visa refusals at a port-of-entry are common as people are frequently able to deceive visa officers abroad, with the deception only coming to light upon arrival at their destination.