The assets also included investments, jewelry and works of art, a document posted on the president's website showed. Owned by a government contractor that was bidding for a lucrative rail contract, the nearly $4 million house at the center of the scandal was being acquired by Pena Nieto's wife. First Lady Angelica Rivera, a former leading actress, said she was paying for the property with her own earnings, but on Tuesday said she would give it up…