48 Cited authorities

Strickland v. Washington
466 U.S. 668 (1984) Cited 158,880 times 176 Legal Analyses
Holding an "error by counsel" doesn't "warrant setting aside the judgment of a criminal proceeding" where in the context of the whole proceeding the identified error "had no effect on the judgment"
Coleman v. Thompson
501 U.S. 722 (1991) Cited 26,259 times 49 Legal Analyses
Holding in relevant part that federal habeas review of a procedurally defaulted claim is barred "unless the prisoner can demonstrate cause for the default and actual prejudice as a result of the alleged violation of federal law"
Wiggins v. Smith
539 U.S. 510 (2003) Cited 9,484 times 45 Legal Analyses
Holding that counsel's performance was deficient when they failed to expand their investigation into the defendant's life history "after having acquired only rudimentary knowledge of his history from a narrow set of sources," especially when those sources indicated the existence of helpful mitigation evidence
Tennard v. Dretke
542 U.S. 274 (2004) Cited 5,510 times 4 Legal Analyses
Holding that petitioner was entitled to a COA on his Penry claim where his evidence of low IQ and impaired intellectual functioning had "mitigating dimension beyond the impact it has on the individual's ability to act deliberately"
Roe v. Flores-Ortega
528 U.S. 470 (2000) Cited 5,728 times 18 Legal Analyses
Holding in criminal habeas context that counsel's failure to file a timely appeal is presumptively prejudicial, with no need for a "further showing from the defendant of the merits of his underlying claims"
Rompilla v. Beard
545 U.S. 374 (2005) Cited 2,976 times 13 Legal Analyses
Holding that counsel's minimal investigation was deficient even though the defendant was "actively obstructive by sending counsel off on false leads"
McMann v. Richardson
397 U.S. 759 (1970) Cited 7,413 times 4 Legal Analyses
Holding that even a possible misjudgment about admissibility of evidence is not ineffective assistance.
Porter v. McCollum
558 U.S. 30 (2009) Cited 1,131 times 5 Legal Analyses
Holding that it "is unreasonable to discount to irrelevance the evidence of [a petitioner's] abusive childhood, especially when that kind of history may have particular salience for a jury" evaluating the petitioner's interpersonal relationships
Ake v. Oklahoma
470 U.S. 68 (1985) Cited 3,052 times 28 Legal Analyses
Holding that when the State presents aggravating psychiatric evidence during a capital sentencing proceeding, the defendant has a due process right to the assistance of a psychiatrist
Bobby v. Van Hook
558 U.S. 4 (2009) Cited 1,047 times
Holding performance not deficient when counsel gathered a substantial amount of information and then made a reasonable decision not to pursue additional sources

CHAMPION (STEVE ALLEN) ON H.C.

48 Cited authorities

Holding an "error by counsel" doesn't "warrant setting aside the judgment of a criminal proceeding" where in the context of the whole proceeding the identified error "had no effect on the judgment"

Holding in relevant part that federal habeas review of a procedurally defaulted claim is barred "unless the prisoner can demonstrate cause for the default and actual prejudice as a result of the alleged violation of federal law"

Holding that petitioner was entitled to a COA on his Penry claim where his evidence of low IQ and impaired intellectual functioning had "mitigating dimension beyond the impact it has on the individual's ability to act deliberately"

Holding in criminal habeas context that counsel's failure to file a timely appeal is presumptively prejudicial, with no need for a "further showing from the defendant of the merits of his underlying claims"

Holding that counsel's minimal investigation was deficient even though the defendant was "actively obstructive by sending counsel off on false leads"

Holding that even a possible misjudgment about admissibility of evidence is not ineffective assistance.

Holding that it "is unreasonable to discount to irrelevance the evidence of [a petitioner's] abusive childhood, especially when that kind of history may have particular salience for a jury" evaluating the petitioner's interpersonal relationships

Holding that when the State presents aggravating psychiatric evidence during a capital sentencing proceeding, the defendant has a due process right to the assistance of a psychiatrist

Holding performance not deficient when counsel gathered a substantial amount of information and then made a reasonable decision not to pursue additional sources