RE: Actually, the best rebuttal I have seen of this is from Chertoff’s WP opinion piece. He made the point that most illegal immigration over the border is handled by smugglers. Those smugglers are very unlikely to want to transport those who they suspect to be ill— it would ruin their very lucrative business.
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That’s a good argument, but still, the question remains, if the airlines REFUSE to fly anyone from say Liberia because they don’t have a visa, how are they going to even reach Mexico?
I assume that someone could fly to Mexico and then cross the border into the US. In that case, wouldn’t it have to be Mexico that imposed the visa restrictions?