[JURIST] An Obama administration legal memorandum from last year found that the killing of US citizen and senior al Qaeda [GlobalSecurity backgrounder] leader Anwar al-Awlaqi [BBC profile; JURIST news archive] would only be legal if it were not feasible to take al-Awlaqi alive. The memo last year followed months of legal debate regarding the decision to kill a US citizen without first having a trial. The secret document written by the Department of Justice (DOJ) [official website] justified the decision…