United States v. Mirna Valenzuela, 495 F. App'x 817

Five defendants were convicted at trial of conspiracy, sex-trafficking, and transporting persons for prostitution arising from a Guatemala-to-US trafficking operation.
Victims were recruited with promises of legitimate jobs, but were forced into prostitution upon arrival through threats, violence, coercion, and control.
The FBI investigated after a tip, resulting in arrests of nine co-conspirators; four pled guilty and five went to trial.
Appellants challenge evidentiary rulings, Batson claims, jury instructions, and multiple sentencing enhancements.
The district court’s judgments and sentences were affirmed on appeal.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Rule 412 ruling on prior acts	Appellants contend the court erred by excluding prior prostitution evidence under Rule 412.	Appellants argue the evidence was relevant to knowledge and consent under §1591(a).	No reversible error; evidence not probative of knowledge/consent; 412 properly applied.
Batson claim—racially motivated striking	Prosecution struck an African-American juror for discriminatory reasons.	Government provided a race-neutral basis; defense offered no rebuttal.	No clear error; race-neutral explanations supported; three African-Americans seated.
Jury instructions and elements	Instructions adequately stated the elements of §1591(a) with no misstatement.	Objections to Instructions 23/24 argued misdirection toward force/fraud/coercion.	No abuse of discretion; instructions correctly stated elements.
Sentencing enhancements and guidelines	Judgment properly applied multiple enhancements (2A3.1(b)(2), 3A1.1(b)(1), 3A1.3, 3B1.1, etc.).	Possible misapplication or harmless error in some enhancements; occasional errors addressed as harmless.	District court did not abuse or commit harmless error; sentences affirmed as reasonable.
Ex post facto	Amended §1591(a) with mandatory minimum applied to conduct in fall 2006.	Amendment retroactivity is applicable to the case.	No ex post facto violation; amendment applied appropriately.

United States v. Waters, 627 F.3d 345 (9th Cir. 2010) (evidentiary rulings; de novo review; constitutional-right considerations)
United States v. Steele, 298 F.3d 906 (9th Cir. 2002) (discriminatory intent standard for Batson claims)
United States v. Vallejo, 237 F.3d 1008 (9th Cir. 2001) (de novo review of misstatement of elements; plain-error considerations)
United States v. Brooks, 508 F.3d 1205 (9th Cir. 2007) (plain-error review following failure to object)
United States v. Davis, 36 F.3d 1424 (9th Cir. 1994) (objections withdrawn; standard for plain error)
United States v. Kimbrew, 406 F.3d 1149 (9th Cir. 2005) (sentencing guidelines interpretation; abuse of discretion standard)
United States v. Carty, 520 F.3d 984 (9th Cir. 2008) (final sentencing decisions; abuse of discretion; 3553(a) factors)
United States v. Randall, 162 F.3d 557 (9th Cir. 1998) (plain-error review in sentencing context)
United States v. Cruz-Gramajo, 570 F.3d 1162 (9th Cir. 2009) (3C1.1 enhancement retroactivity considerations)
United States v. Castro, 972 F.2d 1107 (9th Cir. 1992) (concerning obstruction of justice; later overruled on other grounds)