From Dan Gifford via email:
UPDATE: From Dan Gifford--
MORE ON MIERS JUST IN FROM A GOOD DC SOURCE: "FYI the White House folks told me she owns a gun and has a concealed carry permit."
UPDATE: From Dan Gifford--
Just understand that I cannot personally verify that statement. Gene Volokh has checked with Texas and found she does not have one from that state. There are other state possibilities like Maryland and Virginia or she may have a Special US Marshal designation like some other DC VIPs. On the other hand, she may not have a gun or a CCW. All I can say for certain is that the statement came from a reliable DC source and that another DC lawyer on Volokh's blog described Miers as a gun toting evangelical.