# § 2264. Scope of Federal review; district court adjudications
**(a)** Whenever a State prisoner under capital sentence files a petition for habeas corpus relief to which this chapter applies, the district court shall only consider a claim or claims that have been raised and decided on the merits in the State courts, unless the failure to raise the claim properly is—
**(1)** the result of State action in violation of the Constitution or laws of the United States;
**(2)** the result of the Supreme Court’s recognition of a new Federal right that is made retroactively applicable; or
**(3)** based on a factual predicate that could not have been discovered through the exercise of due diligence in time to present the claim for State or Federal post-conviction review.
**(b)** Following review subject to subsections (a), (d), and (e) of section 2254, the court shall rule on the claims properly before it.
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**Source Credit**: (Added Pub. L. 104–132, title I, § 107(a), Apr. 24, 1996, 110 Stat. 1223.)
## Statutory Notes and Related Subsidiaries
### Effective Date
Section applicable to cases pending on or after , see , set out as a note under .