ECOA would apply, because they are an applicant, and applicants have to be treated consistently.
1002.6(b)7 indicates (7) Immigration status. A creditor may consider the applicant's immigration status or status as a permanent resident of the United States, and any additional information that may be necessary to ascertain the creditor's rights and remedies regarding repayment.
Commentary
Paragraph 6(b)(7)
1. National origin—immigration status. The applicant's immigration status and ties to the community (such as employment and continued residence in the area) could have a bearing on a creditor's ability to obtain repayment. Accordingly, the creditor may consider immigration status and differentiate, for example, between a noncitizen who is a long-time resident with permanent resident status and a noncitizen who is temporarily in this country on a student visa.
2. National origin—citizenship. A denial of credit on the ground that an applicant is not a United States citizen is not per se discrimination based on national origin.
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Integrity. With it, nothing else matters. Without it, nothing else matters.