The United States has said it is relaunching a trade fight against a European Union ban on imports of hormone-treated American beef, raising the possibility of imposing tariffs on European goods.
The US decision, which reignites a long-standing disagreement, was taken following the failure of talks to adopt a transatlantic trade pact this year.
"American ranchers raise some of the best beef on the planet but restrictive European Union policies continue to deny EU consumers access to US beef at affordable prices," Agriculture Secretary Tom Vilsack said in a statement from the office of the US Trade Representative.
The World Trade Organization in 1998 ruled that an EU ban on imports of US beef violated WTO obligations and was not based on scientific evidence, according to the statement.
European officials had argued that the dispute should be handled via the Transatlantic Trade and Investment Partnership, but said in September that adopting the proposed trade pact in 2016 was no longer possible.
Given the failure of the TTIP talks, the US is reinstating its trade action, according to USTR.
The statement said the US could impose tariffs on a list of EU goods following a public hearing.
Irish beef exports to the US were estimated to be worth €14m in 2015, with a new deal signed this summer that also allows the export of manufacturing beef to the US.