[JURIST] US Attorney General Eric Holder [official website] instructed federal prosecutors on Thursday to use DNA evidence as much as possible [press release], in a reversal of Bush administration policy. Among the changes, defendants who plead guilty will no longer have to waive their right to DNA evidence under the Innocence Protection Act of 2004 [text]. The memo also calls for the collection of DNA from all federal arrestees. Holder said in the press release that DNA collection, when available,…