From another medical professional (Ivy League MD/PhD, if the signature line is accurate):

You are too generous. Of course, how many founders there are of a pandemic will have effects on controlling an infection. If you control localized eruptions, but continually allow new cases in to inoculate fresh foci, the number of total infections would be higher. The effect of new influx will be minimal if a true pandemic is already present, but that is not the current case. Therefore, if all that mattered in the world was limiting the number of Americans getting the swine flu, we would do our utmost to close the border. I am not saying that is good policy – too hard to do, the infection is just not scary enough, economic and political costs too high. But it is a typically glib lie to say it would make no difference. This lie will go unquestioned by the medical establishment because Obama said it.