Flag supported. Negative trust given.
If we're talking about halal and haram, lend someone with additional interest is already haram in the first place, no matter small or big the interest. It's become halal if the loan is interest free and the borrower give additional interest voluntary, not forced.
I have heard of Sukuk bond before which is commonly done by Muslims. I think it is about something related to debt in a way that some people or organizations profit from it. Which means that is not also halal? Why are Muslims doing it publicly?
Also is borrowing with interest is haram, no need for Muslims to borrow such money. So of I buy something at $50 to resell it as a trader for $55. That should also become haram because I should not include interest.