Hotel price comparison site EarnAway has removed all hotels owned by Donald Trump from its pages.
The firm said it made the decision after receiving “numerous complaints” and hopes others will follow suit.
The founders of the site, which allows its members to earn cashback on their hotel bookings, said that they “refuse to contribute any further to Trump’s domination of the American political system”.
Co-founder of EarnAway, Robert Berrisford, said: “At EarnAway we have historically offered our customers the best deals on trips to some of Donald Trump’s most well-known international hotels, such as The Trump SoHo in New York, The Trump Plaza in New Jersey and Trump Taj Mahal in Atlantic City.
“However, we have now made the decision to remove all of his hotels and resorts from our website as we feel it’s ethically and morally wrong for us to effectively help fund and contribute to a political campaign that we have such strong opposition to.
“I am not at all worried about this decision having a detrimental effect on our business; in fact we have already had a number of complaints from some of our regular customers who don’t appreciate the fact that we promote Trump’s hotels in the first place.”