(Investment fraud)Shoud expert witness be allowed to testify based on an unverified report? Can it be verified after the hearing

The judge will decide if the rules of evidence have been followed. Some rules allow experts to rely upon information normal to the discipline that you or I might not otherwise think valid. That is why the judge is invested with wide latitude in applying the rules of evidence to a given situation. If you need a lawyer...

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Good luck to you.

God bless. I am in Chicago and do not practice in your state.

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