You are not residing in the US now? That would make it difficult. Note that for anybody to get a loan for a business there are qualifications that must be met. If the business is a start-up with no credit, the owner will have to personally guarantee the loan. Banks also often like to see at least some track record with the company before making the loans. When looking into a loan, you will need a well-thought out business plan to present to the loan officer. Also note that there are certain business entities (ie, S-Corp) in which non-US citizens can't participate.
There is no law prohibiting it, however, if you are not physically here, do not have a track record or other assets to back the loan and have not already started the business it will be difficult to find a lender.
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