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Evidence sample analysis

MBE Evidence Prior Inconsistent Statement Impeachment Trap

Study a prior-inconsistent-statement impeachment problem with examiner-style analysis on foundation, extrinsic evidence, and substantive-use limits.

Last reviewed April 22, 2026
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Fact pattern

Marcus is on trial in federal court for bank fraud. The prosecution calls Ava, a bookkeeper, who testifies that she saw Marcus sign the false wire instructions on April 12. Defense counsel cross-examines Ava and asks whether she told federal agents two days after the event that she "never actually saw Marcus sign anything" and only assumed he did because he controlled the account. Ava denies making that statement. The defense then calls Agent Ross, who testifies that during a recorded post-incident interview Ava said exactly that: she did not see Marcus sign and was only assuming his involvement. The prosecution objects that Agent Ross's testimony is hearsay and improper extrinsic impeachment.

Quick answer

The defense may use Agent Ross's testimony to impeach Ava with her prior inconsistent statement, but the unsworn interview statement is not admissible substantively for its truth under FRE 801(d)(1)(A). A witness may be impeached with a prior inconsistent statement if the witness had an opportunity to explain or deny it and the opposing party had a chance to examine the witness about it. Under FRE 613, extrinsic evidence of a prior inconsistent statement is admissible for impeachment so long as the statement concerns a non-collateral matter. But using the prior statement for its truth is a different question. Under FRE 801(d)(1)(A), a prior inconsistent statement is non-hearsay and admissible substantively only if the declarant testifies at trial, is subject to cross-examination, and the prior statement was given under penalty of perjury at a trial, hearing, other proceeding, or deposition. An ordinary unsworn interview with agents does not meet that standard, though it may still be admitted for impeachment.

IRAC model answer

Issue

May the defense use Agent Ross's testimony to impeach Ava with her prior inconsistent statement, and may that prior statement also be used substantively for its truth?

Rule

A witness may be impeached with a prior inconsistent statement if the witness had an opportunity to explain or deny it and the opposing party had a chance to examine the witness about it. Under FRE 613, extrinsic evidence of a prior inconsistent statement is admissible for impeachment so long as the statement concerns a non-collateral matter. But using the prior statement for its truth is a different question. Under FRE 801(d)(1)(A), a prior inconsistent statement is non-hearsay and admissible substantively only if the declarant testifies at trial, is subject to cross-examination, and the prior statement was given under penalty of perjury at a trial, hearing, other proceeding, or deposition. An ordinary unsworn interview with agents does not meet that standard, though it may still be admitted for impeachment.

Application

Agent Ross's testimony is admissible to impeach Ava. The defense confronted Ava on cross with the substance of the prior inconsistent statement, and Ava denied making it, so the basic fairness requirement of FRE 613 is satisfied. The inconsistency also matters on a central, non-collateral issue: whether Ava actually observed Marcus sign the false instructions. Because the statement goes directly to her claimed firsthand knowledge, extrinsic proof through Agent Ross is allowed. The harder issue is substantive use. Ava's interview with Agent Ross occurred during an investigative interview, not under oath at a prior formal proceeding. That means FRE 801(d)(1)(A) is not satisfied. So the statement may be used to attack Ava's credibility, but it is still hearsay if offered to prove that Ava truly did not see Marcus sign anything. Unless some other hearsay exemption applies, the jury may not treat the statement as substantive proof of what happened. The court should therefore admit Agent Ross's testimony with a limiting instruction if requested.

Conclusion

The defense may use Agent Ross's testimony to impeach Ava with her prior inconsistent statement, but the unsworn interview statement is not admissible substantively for its truth under FRE 801(d)(1)(A).

Numbered reasoning steps

  1. Ask first whether the evidence is offered for impeachment or for truth.
  2. Apply FRE 613 to see whether the witness had a chance to explain or deny the statement.
  3. Check whether the inconsistency concerns a collateral or non-collateral matter.
  4. Separately evaluate substantive use under FRE 801(d)(1)(A).
  5. If the statement is admissible only for impeachment, mention a limiting instruction.

Why wrong answers fail

Agent Ross cannot testify because all prior inconsistent statements are hearsay.

Prior inconsistent statements can be used for impeachment even when they are not admissible substantively for truth.

The statement is automatically admissible for its truth because Ava testified and was cross-examined.

FRE 801(d)(1)(A) also requires that the prior inconsistent statement have been made under penalty of perjury at a qualifying proceeding.

Extrinsic evidence is never allowed once the witness denies the statement.

Extrinsic impeachment is allowed for non-collateral matters so long as the witness had a chance to address the inconsistency.

Because the statement was recorded, it counts as a deposition.

A recorded interview is not transformed into a deposition or other sworn proceeding merely because it was memorialized.

Issue-spotting checklist

  • Separate impeachment use from hearsay-for-truth use every time.
  • Use FRE 613 for foundation and extrinsic-evidence mechanics.
  • Check whether the inconsistency matters to a non-collateral issue.
  • Use FRE 801(d)(1)(A) only for sworn prior statements from qualifying proceedings.
  • Request a limiting instruction when the statement comes in only to attack credibility.

Primary law and source anchors

  • Federal Rule of Evidence 613 Prior inconsistent statements may be used for impeachment, including with extrinsic evidence on non-collateral matters.
  • Federal Rule of Evidence 801(d)(1)(A) A prior inconsistent statement is non-hearsay substantively only if made under penalty of perjury at a qualifying proceeding.
  • United States v. Owens, 484 U.S. 554 (1988) A witness subject to cross-examination can satisfy confrontation requirements even where memory problems complicate testimony.
  • Federal Rule of Evidence 105 The court must give a limiting instruction on request when evidence is admissible for one purpose but not another.