US and EU banks have always refused to loan in Belize and other countries because of the difficulty in valuation and foreclosing.
Loan rates are also based in part on currency stability.
Loans in US- low rate.
Loans in Greece or Argentina -astronomical.
A BZ bank takes the risk that money will devalue and they will be paid back in worthless BZ money.They can not ask you for US Dollar repayment by law.