President Donald Trump's executive order barring citizens from seven predominantly Muslim countries has prompted nationwide protests and led tech companies, including Amazon, to consider legal action because of potential business impacts.
But for some tech companies around the world, the ban has already thrown operations into chaos.
"Until the executive order, we didn't really care about who's from where or what religion they were, we didn't ask, but all these things have been a distraction and worrying," said Husayn Kassai, the CEO and co-founder of London-based startup Onfido.
The company, which uses artificial intelligence to help clients carry out complex background checks, boasts a 145-person staff representing 41 different nationalities.
Kassai was born in Manchester, U.K., but holds dual citizenship in Iran and the U.K. He moved to San Francisco to helm the company's stateside expansion, which now employees 10 people.
Kassai, who holds a U.S. green card, is exempt from the Trump administration's immigration order, according to a recent clarification from the White House, but he said there's too much uncertainty to know if he will be leaving the country anytime soon.
Unlike Kassai, Onfido Co-founder Eamon Jubbawy doesn't have a green card, and his parents were born in Iraq. He's currently in London, and does not expect to be allowed to visit the U.S.-arm of his company in the near future.