Rep. Eric Massa - Democrat of New York state - is calling for the Mexican border to be closed. Meanwhile, Janet Napolitano of the Department of Homeland Security is refusing to close the border and does not appear to fully appreciate the risks of a loose border during a pandemic. At a press conference today, she said: "We're already doing passive surveillance at the border... You would close the border if you thought you could contain the spread of disease, but the disease already is in a number of states within the United States." ...Noting that those infected with swine flu may not show...