Switzerland filed a complaint Monday with the World Trade Organization (WTO) against the United States over the tariffs imposed by the Trump administration on steel and aluminum imports.

Swiss companies exported about $80 million in steel and aluminum products to the U.S. in 2017, according to a government statement.

Switzerland is just the latest country to file a lawsuit against the United States over the tariffs, joining the European Union, among others.

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Other countries have taken steps to retaliate against U.S. exports, prompting fears of a wider trade war.

Switzerland noted in a statement that it had sought an exemption from the tariffs.

“In order to protect Switzerland’s interests, Federal Councillor Schneider-Ammann has taken the decision to initiate WTO dispute settlement proceedings,” the statement said. “Other WTO members affected by the tariffs, including Canada, the EU, Mexico, and Norway, have also requested consultations with the US.”

A request for consultations is the first step in a WTO dispute settlement case. If the WTO rules against the United States, it could authorize other parties to impose retaliation against the U.S.

Switzerland echoed other U.S. allies in arguing that the president was “unjustified” in declaring a national security reason for initiating the tariffs. Under the Section 232 U.S. law, the president may impose tariffs on imports if he determines the imports are a threat to security.

"From Switzerland's point of view, the additional duties, which according to the US have been introduced to protect national security, are unjustified," the statement read.