A Washington Post columnist on Wednesday called it “staggering” that Supreme Court Justice Clarence Thomas’ wife tried to prevent reforms to the nation’s high court. Ruth Marcus, a Pulitzer Prize finalist for commentary, appeared floored in her column over a bombshell Pro-Publica report that found Ginni Thomas privately praised the conservative First Liberty Institute, a major religious-rights group, for fighting efforts to reform the Supreme Court. Notably, those efforts were largely initiated due to questions swirling over Clarence Thomas’ actions. The group, Marcus noted, litigates extensiv…