42 Cited authorities

Strickland v. Washington
466 U.S. 668 (1984) Cited 158,573 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"
Williams v. Taylor
529 U.S. 362 (2000) Cited 37,729 times 66 Legal Analyses
Holding that counsel's performance was deficient when their investigation failed to uncover "extensive records" filled with mitigation evidence concerning the defendant's family history, education, mental health, and rehabilitation
Padilla v. Kentucky
559 U.S. 356 (2010) Cited 8,597 times 131 Legal Analyses
Holding that counsel has a duty under the Sixth Amendment to inform a noncitizen defendant that his plea would make him eligible for deportation
Wiggins v. Smith
539 U.S. 510 (2003) Cited 9,458 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
Murray v. Carrier
477 U.S. 478 (1986) Cited 16,431 times 14 Legal Analyses
Holding that constitutionally ineffective assistance of counsel may provide cause for a procedural default
Strickler v. Greene
527 U.S. 263 (1999) Cited 6,377 times 20 Legal Analyses
Holding that a newspaper article detailing that a witness had been interviewed by the police did not suffice to put a defendant's lawyer on notice that records and evidence concerning the witness existed and had been suppressed
Brady v. Maryland
373 U.S. 83 (1963) Cited 43,272 times 133 Legal Analyses
Holding that the prosecution violates due process when it suppresses material, favorable evidence
United States v. Bagley
473 U.S. 667 (1985) Cited 9,421 times 34 Legal Analyses
Holding that there was a Brady violation when federal prosecutors withheld evidence of inducements made to witnesses to encourage them to testify against the defendant
Kimmelman v. Morrison
477 U.S. 365 (1986) Cited 5,803 times 7 Legal Analyses
Holding that, if trial counsel's failure to litigate a constitutional claim competently "is the principal allegation of ineffectiveness," petitioner must also prove that the underlying constitutional claim is meritorious
Giglio v. United States
405 U.S. 150 (1972) Cited 12,137 times 29 Legal Analyses
Holding that prosecution must disclose all information or material that may be used to impeach the credibility of prosecution witnesses where witness's credibility is "an important issue in the case"

The People, Respondent,v.Julio Negron, Appellant.

42 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 that counsel's performance was deficient when their investigation failed to uncover "extensive records" filled with mitigation evidence concerning the defendant's family history, education, mental health, and rehabilitation

Holding that counsel has a duty under the Sixth Amendment to inform a noncitizen defendant that his plea would make him eligible for deportation

Holding that constitutionally ineffective assistance of counsel may provide cause for a procedural default

Holding that a newspaper article detailing that a witness had been interviewed by the police did not suffice to put a defendant's lawyer on notice that records and evidence concerning the witness existed and had been suppressed

Holding that the prosecution violates due process when it suppresses material, favorable evidence

Holding that there was a Brady violation when federal prosecutors withheld evidence of inducements made to witnesses to encourage them to testify against the defendant

Holding that, if trial counsel's failure to litigate a constitutional claim competently "is the principal allegation of ineffectiveness," petitioner must also prove that the underlying constitutional claim is meritorious

Holding that prosecution must disclose all information or material that may be used to impeach the credibility of prosecution witnesses where witness's credibility is "an important issue in the case"