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Donald Trump has risked angering Scots by banning Irn-Bru at his luxury golf resort in Ayrshire.

Visitors to Turnberry are unable to purchase Scotland’s beloved soft drink due to fears its bright orange colouring could stain the carpets.

The ban came to light after guests asked for Irn-Bru to be supplied at an event at the five-star resort, which has recently received a £200m upgrade.

Turnberry’s general manager, Ralph Porciani, told the Ayrshire Post: “We can’t have it staining when to replace the ballroom carpet would be £500,000 alone.

“We have villas here with Irn-Bru stains in the carpets which I can’t let.”

The US president, whose mother was born on the Isle of Lewis, Scotland, also owns a golf course in Aberdeenshire and is expected to visit the Queen at Balmoral when he visits the UK this summer.

The Irn-Bru ban triggered an immediate backlash online, with one person writing on Twitter: “The President of the United States has just declared war on Scotland.”

Historian David Silkenat said: "I think I’ll have @irnbru tonight to protest @realDonaldTrump banning it from his golf course."

Another person added: “I'm not sure I've seen a country come together quite like the Scotland in response to Trump banning Irn-Bru at his golf resort.”

Protests were already expected to be held in Scotland if Mr Trump does include it on his planned visit this July.

Scottish Labour leader, Richard Leonard, said: “Someone who holds such misogynist, racist and anti-trade union views not to mention his whole approach to foreign policy, someone who rejects the Paris climate change agreement, should simply not be given the red-carpet treatment.”

The Scottish Greens leader, Patrick Harvie, added that the president would be “met with a level of protest not seen since the Iraq war”.