[CFA Level 1] 请教一个一级 notes 上的 misrepresentaion 问题。 翻译

godfather

 A member describes an interest-only collateralized mortgage obligatin as guaranteed

by U.S government since it is a claim against the cash flows of a pool of guaranteed

mortgages, although the payment stream and the market value of the security are not

guaranteed.

comment:

This is a violation because of the misrepresentation.

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Why？ 如何翻译上面的话，看不出什么地方 misrepresentation. thanks.