Allen Stanford is mentally fit to stand trial and will face a jury next month on charges he swindled investors of more than $7 billion, U.S. District Judge David Hittner in Houston ruled.  Hittner’s ruling followed testimony from psychiatrists and neurologists who examined Stanford during and after eight months of rehabilitation at the federal prison hospital in Butner, NC. Stanford’s defense team argued unsuccessfully that his mental capacity was diminished by head injuries he suffered in a 2009 jailhouse assault and the effects of powerful anxiety medications prescribed in prison after the beating. Prosecutors told the judge that Stanford was trying to avoid trial by faking amnesia. They cited the results of more than 16 neuropsychological tests and a magnetic brain scan administered at Butner.