New York attorney Steven Donziger, one of the defendants in Chevron Corp.’s ongoing fraud trial, says he believes his and the Ecuadorian defendants’ due process rights are being violated. Donziger submitted a letter to Judge Lewis Kaplan, who is overseeing the trial…Among the defendants’ concerns: possible harassment of key witness Judge Nicolas Zambrano; the use of biased special masters; the absence of the Lago Agrio trial record in the RICO proceedings; and the federal court’s failure to rule on testimonial and evidentiary objections…Chevron filed the racketeering lawsuit in the New York federal court in 2011 in an effort to prevent Donziger and the Ecuadorians from pursuing enforcement of a $19 billion award against it. The $19 billion judgment stems from an environmental lawsuit involving Texaco Petroleum…