New York Attorney General Letitia James doubled down Tuesday on her demand that the judge in former President Donald Trump’s $464 million civil fraud trial allow her to investigate him after his former CFO pleaded guilty to perjury, court records show. The Attorney General’s office Tuesday filed a quick reply to Trump and Allen Weisselberg’s attorneys sharp rebuttal to her demand for leeway to investigate from Justice Arthur Engoron. “It is clear that Defendants and their counsel are completely incapable of independently disclosing any impropriety,” wrote Senior Enforcement Counsel Kevin Walla…