Caterpillar's statement says that they will only demand corrective measures and more extensive checks on their suppliers, when made aware of wrongdoing and/or not adhering to the company's values and code of conduct.
"Caterpillar reserves the right to verify our supplier's compliance with the Supplier Code of Conduct. However, we do not currently perform audits or require that our suppliers certify that materialsincorporated into products comply with laws regarding slavery and human trafficking in the countries inwhich they are doing business. In the event that Caterpillar becomes aware of any actions or conditions not in compliance with Caterpillar's Supplier Code of Conduct, Caterpillar reserves the right to demand corrective measures. "