FedEx was sued Friday in federal court in Miami on behalf of customers seeking refunds after the Supreme Court of the United States ruled that President Donald Trump unlawfully imposed billions of dollars in emergency tariffs on imported goods.

The proposed class action alleges that potentially millions of shippers paid import duties and associated brokerage fees on goods that, under the Court’s ruling, should have entered the United States duty-free. The lawsuit seeks compensation for those charges.

In a statement, FedEx said, “If refunds are issued to FedEx, we will issue refunds to the shippers and consumers who originally bore those charges.”

However, the complaint argues that the company’s pledge is not legally binding. John Yanchunis, an attorney representing plaintiff Matthew Reiser, said the goal of the litigation is to return “every penny” that consumers were allegedly overcharged.

FedEx is among roughly 2,000 companies that have filed suits against the federal government in the U.S. Court of International Trade seeking to recover tariffs paid under the International Emergency Economic Powers Act (IEEPA).

Last week, the Supreme Court ruled 6-3 that Trump exceeded his authority by invoking the emergency powers statute to impose sweeping tariffs.

Reiser, a Miami resident, said FedEx charged him $36, including $21 in IEEPA duties and $15 in brokerage and clearance fees, for a pair of tennis shoes purchased from a German retailer. The lawsuit claims no duty should have applied.

Separately, several major corporations have joined the wave of tariff-refund litigation in the U.S. Court of International Trade. Hasbro, L'Oreal, Dyson, Bausch + Lomb, Costco, and J.Crew are among the companies pursuing reimbursement claims.

The Miami case now raises a parallel question: whether shipping intermediaries like FedEx can be compelled to refund customers directly if tariff payments are ultimately returned.