The IRS is conducting a transfer pricing examination of USAco, a wholly-owned U.S. subsidiary of FORco. USAco purchases widgets from FORco for resale in the United States. The IRS examines USAco's transfer pricing practices for a year in which the statute of limitations will expire in six months. With respect to FORco's manufacturing costs, USAco has failed to reply to information document requests and a summons that is currently docketed in court for enforcement. What procedural tools may the IRS employ to obtain information regarding FORco's manufacturing costs? Explain.