The EB-5 visa is designed to help encourage foreign direct investment in projects across the United States
The number of people participating in the scheme has risen over the last few years, up from 1,369 approvals in 2010 to 9,602 last year.
The number of Gulf residents approved to take part in an Ameurican scheme offering the chance to earn citizenship in return for a minimum investment of $500,000 surged nearly six-fold last year, according to official data.
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