[JURIST] A federal judge on Wednesday declared Allen Stanford [BBC profile; JURIST news archive] incompetent to stand trial in connection with a $7 billion fraud scheme. Judge David Hittner of the US District Court for the Southern District of Texas [official website], who postponed the trial [JURIST report] earlier this month, ordered Stanford to enter detoxification for an addiction to anti-anxiety and anti-depression medications prescribed to him by prison physicians that has rendered him unable to meaningfully contribute to his…