There are three general categories of incompetent evidence. An example of evidence that is not admissible because a federal statute specifically prohibits its use is:

Question

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Evidence illegally obtained by wiretapping or eavesdropping is specifically prohibited by federal law, and therefore is not admissible in court. Evidence obtained by an illegal search may also be inadmissible, but this is not a blanket prohibition like wiretapping and eavesdropping. Hearsay evidence and opinion testimony may be admissible under certain circumstances and are not categorically excluded.

There Are Three General Categories of Incompetent Evidence