The U.S. Equal Employment Opportunity Commission (EEOC) is investigating the diversity, equity, and inclusion (DEI) programs of 20 large law firms.Acting Chair Andrea Lucas sent letters requesting details on various aspects, including hiring policies, compensation, and the use of affinity groups.The EEOC's action follows executive orders by former President Donald Trump directing scrutiny of law firms for potential violations of federal laws.Former EEOC officials criticized the letters, stating they have no basis in the laws and raised procedural questions.