This photo taken on Oct 29, 2020 shows vineyards near Saint-Emilion, southwestern France. BERTRAND COMBALDIEU/AP)

BRUSSELS/WASHINGTON - The European Union is poised to move next week to impose tariffs on US$4 billion of US imports in retaliation for US subsidies for planemaker Boeing, EU diplomats said, teeing up an eleventh-hour showdown with US President Donald Trump.

A majority of EU governments have backed imposing the widely expected tariffs once EU trade ministers meet next Monday - the latest twist in a transatlantic trade saga that has spanned 16 years and four US presidents.

READ MORE: Europe scrambles to fight off threat of US tariffs on France

Democratic presidential candidate Joe Biden is edging closer to victory in the US election, but Republican Trump would remain president until Jan 20 and has plenty of leeway to increase US tariffs on Europe that were imposed in a parallel case over subsidies for Airbus.

US Trade Representative Robert Lighthizer last month warned any EU tariffs would “force a US response” and Trump has threatened to “strike back harder”..

After holding off on tariffs to avoid clashing with the US presidential campaign, EU governments formally cleared tariffs on Tuesday, Election Day, but must now decide their timing.

“I would expect the tariffs to be imposed next Tuesday or Wednesday,” an EU diplomat said

Brussels views its own tariffs - authorized by the World Trade Organization last month - as important leverage in negotiations to end a dispute that began in 2004.

“I would expect the tariffs to be imposed next Tuesday or Wednesday,” an EU diplomat said.

In October 2019, Washington imposed tariffs on Airbus planes and other European products from cheese to olives and single-malt whisky. Combined, the two cases represent the world’s largest ever corporate trade dispute.

Washington argues there is no legal basis for EU tariffs because underlying subsidies to Boeing have been repealed. European officials argue it is only the WTO that can decide on compliance and that last month’s green light stands.

Both sides accuse the other of failing to obey WTO rulings but are seen as determined to maximize their positions ahead of probable negotiations.

After holding off on tariffs to avoid clashing with the US presidential campaign, EU governments formally cleared tariffs on Tuesday, Election Day, but must now decide their timing.

Farmers, construction, casino tables

Tariffs will hit US planes and parts, fruits, nuts and other farm produce, orange juice, some spirits and other goods from construction equipment to casino tables, diplomats said.

The European Commission said it was fine tuning what it regards as its retaliation rights in case no agreed solution could be found with Washington, including an immediate suspension of US tariffs.

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Lighthizer’s office had no immediate comment. One senior US source said Trump was not expected to feel constraint about expanding US tariffs, even if he loses the election.

The United States is authorized to impose tariffs on US$7.5 billion of European goods, but has not used the whole quota. It could raise duties on various goods or expand the target list.

Chris Swonger, president and CEO of the Distilled Spirits Council of the US, said any EU tariffs on spirits would further devastate an industry that has already seen a 41 percent drop in US whisky exports to Europe due to previous EU tariffs.

European producers have voiced similar complaints about US tariffs. Politicians on both sides of the Atlantic are under mounting pressure to prevent the aircraft feud hurting other industries.

New EU tariffs will also hand Britain, which left the bloc this year, delicate decisions about whether to join neighbors in imposing tariffs at a time when it is caught between trade negotiations with both the United States and EU.

Britain, a partner of France-based Airbus, has pledged to “keep all options open”.