Supreme Court Justice Ketanji Brown Jackson is being accused in an ethics complaint of failing to disclose full information about her husband’s income and not revealing private contributions that were made for the Library of Congress event celebrating her investiture into the high court.

The complaint, made through the Center for Renewing America, a conservative think tank, was addressed in a letter to Roslynn Mauskopf, head of the Administrative Office of the United States Courts and claims that the financial disclosure matters are violations of federal law and could cause Jackson, a nominee last year of President Joe Biden, recusal issues in the future.

The letter, written by think tank President Russell Vought, who served as director of the Office of Management and Budget under former President Donald Trump, alleges that Jackson “has demonstrated a disturbing trend of not reporting material sources of income and gifts.”