President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE accused Harley-Davidson on Tuesday of using the European Union's retaliatory tariffs on its motorcycles as an "excuse" for shifting some of its production abroad and warned that the company would not be able to sell its bikes back to the U.S. without "paying a big tax."

"Early this year Harley-Davidson said they would move much of their plant operations in Kansas City to Thailand. That was long before Tariffs were announced," Trump tweeted. "Hence, they were just using Tariffs/Trade War as an excuse. Shows how unbalanced & unfair trade is, but we will fix it."

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"We are getting other countries to reduce and eliminate tariffs and trade barriers that have been unfairly used for years against our farmers, workers and companies. We are opening up closed markets and expanding our footprint. They must play fair or they will pay tariffs!"

"When I had Harley-Davidson officials over to the White House, I chided them about tariffs in other countries, like India, being too high. Companies are now coming back to America. Harley must know that they won’t be able to sell back into U.S. without paying a big tax!"

Early this year Harley-Davidson said they would move much of their plant operations in Kansas City to Thailand. That was long before Tariffs were announced. Hence, they were just using Tariffs/Trade War as an excuse. Shows how unbalanced & unfair trade is, but we will fix it..... — Donald J. Trump (@realDonaldTrump) June 26, 2018

....We are getting other countries to reduce and eliminate tariffs and trade barriers that have been unfairly used for years against our farmers, workers and companies. We are opening up closed markets and expanding our footprint. They must play fair or they will pay tariffs! — Donald J. Trump (@realDonaldTrump) June 26, 2018

....When I had Harley-Davidson officials over to the White House, I chided them about tariffs in other countries, like India, being too high. Companies are now coming back to America. Harley must know that they won’t be able to sell back into U.S. without paying a big tax! — Donald J. Trump (@realDonaldTrump) June 26, 2018

The Wisconsin-based motorcycle giant announced on Monday that it would shift production of some of its bikes overseas in order to dodge stiff tariffs imposed by the EU in response to Trump's duties on steel and aluminum imports.

Tariffs on the motorcycles were among several trade measures threatened by the EU after the Trump administration announced the steel and aluminum tariffs last month. Those duties have become a sore spot in relations between the U.S. and some of its closest allies, including Canada, France and Germany.

Harley-Davidson has shifted some of its production to India and Thailand in the face of high tariffs in those countries.

In January, the company announced that it would move operations from its Kansas City plant to its plant in York, Pa.

Trump in a later tweet pointed to a study of tariffs on cars from EU countries, saying "it will all even out."

....We are finishing our study of Tariffs on cars from the E.U. in that they have long taken advantage of the U.S. in the form of Trade Barriers and Tariffs. In the end it will all even out - and it won’t take very long! — Donald J. Trump (@realDonaldTrump) June 26, 2018

He later warned that if Harley-Davidson shifts production abroad, it will be the "beginning of the end" for the motorcycle giant, insisting that its bikes should "never be built in another country."

A Harley-Davidson should never be built in another country-never! Their employees and customers are already very angry at them. If they move, watch, it will be the beginning of the end - they surrendered, they quit! The Aura will be gone and they will be taxed like never before! — Donald J. Trump (@realDonaldTrump) June 26, 2018

Trump last Friday threatened to place a 20 percent tariff on all European cars entering the United States.

Updated at 8:34 a.m.