Lawyers for former New York City Mayor Rudy Giuliani have asked a federal judge to review the “constitutionality and legality” of the federal government’s “conduct” in its investigation before the appointment of a special master after his apartment was searched by federal investigators and several of his devices were seized. “The validity of the 2019 covert warrant, and the handling of the information obtained by the prosecutor are serious questions that must be resolved before any further damage is done,” Giuliani lawyers Robert Costello and Arthur Aidala wrote in a letter (pdf) unsealed Monday that was sent last week U.S. District Judge for the Southern District of New York Paul Oetken. They continued to argue that the “fruits of the 2019 search were certainly used in some part to secure the 2021 largely duplicative search warrant and subsequent seizures.” “It is for those reasons that it is premature to consider a special master …