The Class Action Fairness Act of 2005 (CAFA) is a federal law that aimed to address concerns regarding abuses in class action lawsuits by expanding federal jurisdiction over these cases. The act allows federal courts to hear class action cases if the amount in controversy exceeds $5 million, and if there is minimal diversity among the parties involved, meaning at least one plaintiff and one defendant are from different states. CAFA was designed to curb perceived forum shopping and prevent state courts from being overwhelmed with large class action suits.