What issues should one be aware of when bringing non-US residents into an SBA 7(a) financed deal. Assume less than 20% ownership in all cases. Potential scenarios:

A: Investor living outside of the US purchases preferred equity (makes capital contribution). Assume the investor does not have a US bank account and wires the money from overseas.
B: Non-US person is an advisor and receives common equity (no or nominal capital contribution)

Are there any potential issues to be aware of?