Which statement best describes the difference between claim preclusion and issue preclusion in federal practice?

Which statement best describes the difference between claim preclusion and issue preclusion in federal practice?

• A. Issue Preclusion Bars New Issues In Separate Proceedings.
• B. Claim Preclusion Bars Claims Arising From The Same Transaction That Were Litigated Or Could Have Been Litigated.
• C. Reason That Claim Preclusion Prevents Relitigation Of Particular Issues Already Decided.
• D. Issue Preclusion Applies To Claims Based On Different Transactions.

Answer: (B)

The key idea is how preclusion types treat what counts as barred and why. Claim preclusion (res judicata) bars a later claim when it arises from the same transaction or nucleus of facts as a claim that was actually litigated or could have been litigated in a prior, final judgment. In federal practice, once that first action resolves on the merits, you can’t bring another action based on the same transaction that could have been included before. This focuses on the overall claim and whether it belongs to the same cause of action that was—or reasonably could have been—litigated in the earlier suit. Issue preclusion (collateral estoppel), by contrast, bars relitigation of specific issues that were actually litigated and essential to the prior decision, even in a later action that might involve a different claim or transaction. So, the chosen statement correctly describes claim preclusion by emphasizing bar to claims arising from the same transaction that were litigated or could have been litigated. The other statements describe aspects of issue preclusion or misstate the relationship. For example, one mentions protecting against new issues in a separate proceeding (which mischaracterizes issue preclusion’s focus on issues actually decided), another speaks to relitigating particular issues (that’s issue preclusion, not claim preclusion), and another suggests issue preclusion applies to claims from different transactions (not the core rule).

The key idea is how preclusion types treat what counts as barred and why. Claim preclusion (res judicata) bars a later claim when it arises from the same transaction or nucleus of facts as a claim that was actually litigated or could have been litigated in a prior, final judgment. In federal practice, once that first action resolves on the merits, you can’t bring another action based on the same transaction that could have been included before. This focuses on the overall claim and whether it belongs to the same cause of action that was—or reasonably could have been—litigated in the earlier suit.

Issue preclusion (collateral estoppel), by contrast, bars relitigation of specific issues that were actually litigated and essential to the prior decision, even in a later action that might involve a different claim or transaction. So, the chosen statement correctly describes claim preclusion by emphasizing bar to claims arising from the same transaction that were litigated or could have been litigated.

The other statements describe aspects of issue preclusion or misstate the relationship. For example, one mentions protecting against new issues in a separate proceeding (which mischaracterizes issue preclusion’s focus on issues actually decided), another speaks to relitigating particular issues (that’s issue preclusion, not claim preclusion), and another suggests issue preclusion applies to claims from different transactions (not the core rule).