DUBAI, United Arab Emirates (AP) – Donald Trump’s call to keep Muslims from traveling to the United States is causing dismay among business leaders in the Middle East, a region where the billionaire presidential candidate has done business for years.

Emirati business magnate Khalaf al-Habtoor only months ago proclaimed his support for the Republican candidate for president, but that’s all changed in the wake of Trump’s increasingly incendiary comments about Islam.

Al-Habtoor tells The Associated Press, “If he comes to my office, I will not let him in. I reject him.”

Trump has lent his name to two high-profile Dubai golf course projects and an ongoing real estate development, and sought for years to expand his hotel chain into the region.