At least two retail customers have filed proposed class-action lawsuits against companies that have sued in trade court to ensure they receive refunds from tariffs now-deemed illegal. Miami-based Matthew Reiser filed a proposed class-action lawsuit against FedEx and New York-based Nathan Ward made a similar claim against sunglasses maker EssilorLuxottica. The suits seek to ensure that should tariffs be refunded to the companies, they get returned to the customers. The moves follow a rush of more than 1,000 companies that have filed suit in the U.S. Court of International trade over tariff refunds. On Feb. 20, The Supreme Court invalidated tariffs implemented under the International Emergency Economic Powers Act, or IEEPA, worth an estimated $130 billion to $175 billion.