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California Penal Code Section 138: Defending Against Witness Bribery Charges

Posted by Bulldog Law | Feb 03, 2026

California Penal Code Section 138 represents one of the most serious threats to defendants facing allegations of witness tampering and bribery. This comprehensive statute criminalizes various forms of corrupt interference with witnesses, carrying felony penalties that can devastate a defendant's future. Understanding the nuances of this law is essential for mounting an effective defense against these grave accusations.

Understanding the Scope of California's Witness Bribery Law

California Penal Code Section 138 creates two distinct criminal offenses that target different aspects of witness bribery. The statute's broad language encompasses various scenarios where individuals might face prosecution, making it crucial for defense attorneys to understand each subsection's specific requirements and potential defenses.

The law's expansive reach extends beyond traditional courtroom proceedings, applying to any situation where witness testimony might be required in legal proceedings. This broad interpretation creates numerous opportunities for prosecutorial overreach, particularly in cases where the connection to actual legal proceedings remains tenuous or speculative.

Subsection (a): Offering Bribes to Witnesses

Under California Penal Code Section 138(a), prosecutors can charge individuals who give, offer, or promise bribes to witnesses or prospective witnesses. The statute criminalizes two specific scenarios: attempting to prevent witness attendance at trials or judicial proceedings, and trying to dissuade witnesses from attending through bribery offers.

From a defense perspective, the key challenge lies in the statute's broad definition of what constitutes a "bribe" and its application to prospective witnesses. Defense attorneys must carefully examine whether the alleged conduct truly constitutes bribery or if it represents legitimate communication or assistance that prosecutors are mischaracterizing.

The prosecution must prove that defendants acted with specific intent to influence witness behavior through corrupt means. This intent requirement provides significant opportunities for defense strategies that focus on alternative explanations for defendants' actions, such as legitimate business dealings, personal relationships, or misunderstandings about the nature of the interaction.

Subsection (b): Witnesses Accepting Bribes

California Penal Code Section 138(b) targets witnesses who receive or offer to receive bribes with the understanding that their testimony will be influenced or that they will absent themselves from required proceedings. This provision creates complex dynamics in cases involving multiple defendants, where witnesses may face charges alongside those accused of offering bribes.

Defense strategies for witnesses accused under subsection (b) often focus on challenging the prosecution's ability to prove corrupt intent. Many situations involve legitimate financial arrangements, employment opportunities, or personal relationships that prosecutors attempt to recharacterize as corrupt agreements.

The statute's requirement for "understanding" regarding testimony influence creates opportunities for defense attorneys to argue that their clients lacked the requisite mental state for conviction. Evidence demonstrating that witnesses believed they were receiving legitimate compensation or assistance can undermine prosecutorial theories about corrupt agreements.

Critical Case Law Interpretations

Several landmark cases have shaped how courts interpret California Penal Code Section 138, creating both challenges and opportunities for criminal defense attorneys representing clients facing these charges.

Evans v. Superior Court: Broad Application Beyond Pending Cases

The Evans decision established that Section 138 applies to witness bribery attempts even when no formal legal action has been initiated. This interpretation significantly expands the statute's reach, allowing prosecutors to charge individuals for conduct occurring well before any court proceedings begin.

While this broad interpretation presents challenges for defense attorneys, it also creates opportunities to argue prosecutorial overreach in cases where the connection to actual legal proceedings remains speculative.

Defense strategies should focus on demonstrating that defendants lacked knowledge of potential legal proceedings or that their actions were unrelated to any anticipated litigation.

People v. Broce: Preventing Corrupt Interference

The Broce case reinforced that Section 138's primary purpose involves preventing corrupt interference with justice administration. This precedent provides defense attorneys with opportunities to argue that their clients' conduct, while perhaps inappropriate, did not constitute the type of corrupt interference the statute was designed to address.

Effective defense strategies should emphasize legitimate purposes for defendants' actions, distinguishing between corrupt interference and lawful conduct that prosecutors are attempting to criminalize through overly broad statutory interpretation.

People v. Gliksman and People v. Pic'l: Unilateral Intent Standard

These cases established that Section 138 violations do not require bilateral agreements between parties involved in alleged bribery. The unilateral intent of the person offering or receiving the bribe is sufficient for conviction, significantly lowering the prosecution's burden of proof.

This interpretation creates substantial challenges for defense attorneys, as prosecutors need not prove that both parties understood or agreed to corrupt arrangements. However, it also provides opportunities to focus defense strategies on challenging the specific intent element, demonstrating that defendants lacked corrupt purposes for their actions.

Essential Defense Strategies for Section 138 Cases

Defending against California Penal Code Section 138 charges requires sophisticated strategies that address the statute's complex requirements while protecting defendants' constitutional rights.

Challenging Intent Elements

The prosecution must prove that defendants acted with specific corrupt intent to influence witnesses or interfere with legal proceedings. Defense attorneys should thoroughly investigate defendants' motivations, relationships with alleged witnesses, and circumstances surrounding the alleged bribery.

Evidence demonstrating legitimate business relationships, personal friendships, or charitable motivations can undermine prosecutorial theories about corrupt intent. Contemporaneous communications, witness testimony about defendants' character, and documentation of legitimate transactions can support defense arguments about non-corrupt purposes.

Questioning Witness Status

Section 138's application depends on the alleged recipient's status as a witness or prospective witness. Defense strategies should carefully examine whether individuals truly qualified as witnesses under the circumstances, particularly in cases where no formal legal proceedings had been initiated.

Legal research should focus on establishing that alleged witnesses had no reasonable expectation of being called to testify, that their potential testimony was irrelevant to any anticipated proceedings, or that defendants lacked knowledge of their witness status.

Examining Prosecutorial Overreach

The statute's broad language creates opportunities for prosecutorial overreach, particularly in cases involving legitimate business dealings or personal relationships that prosecutors attempt to recharacterize as corrupt arrangements.

Defense attorneys should investigate whether prosecutors are stretching statutory language beyond its intended scope, focusing on legislative intent and constitutional limitations on criminalization of legitimate conduct.

Constitutional Considerations and Due Process Protections

California Penal Code Section 138 prosecutions often involve complex constitutional issues that experienced defense lawyers must carefully navigate. First Amendment protections may limit prosecutorial ability to criminalize certain communications with potential witnesses, particularly when those communications serve legitimate purposes.

Due process protections require prosecutors to prove each element beyond a reasonable doubt, creating opportunities for defense attorneys to challenge weak evidence or prosecutorial theories that rely on speculation rather than concrete proof of corrupt intent.

Practical Implications for Defense Representation

Section 138 cases often involve complex factual scenarios where the line between legitimate conduct and criminal behavior remains unclear. Defense attorneys must carefully evaluate evidence to identify weaknesses in prosecutorial theories while developing compelling alternative narratives about their clients' conduct.

Effective representation requires thorough investigation of defendants' relationships with alleged witnesses, examination of financial transactions or communications that prosecutors claim constitute bribery, and development of evidence supporting legitimate explanations for defendants' actions.

Sentencing Considerations and Collateral Consequences

Convictions under California Penal Code Section 138 carry felony penalties that extend far beyond immediate incarceration. Defendants face potential career destruction, professional license revocation, and significant impacts on their ability to testify in future legal proceedings.

Defense attorneys must consider these collateral consequences when developing plea negotiation strategies or deciding whether to proceed to trial. The stakes in Section 138 cases often justify aggressive defense approaches that might not be appropriate in other criminal contexts.

Conclusion: Protecting Client Rights in Complex Bribery Cases

California Penal Code Section 138 prosecutions represent some of the most challenging cases in criminal defense practice, requiring sophisticated legal strategies and thorough factual investigation. Success depends on understanding the statute's complex requirements while identifying opportunities to challenge prosecutorial overreach.

Defense attorneys must remain vigilant about protecting clients' constitutional rights while developing compelling arguments about legitimate conduct that prosecutors are attempting to criminalize. By focusing on intent challenges, witness status questions, and constitutional protections, criminal defense professionals can effectively advocate for clients facing these serious charges.

The complexity of Section 138 cases underscores the importance of experienced legal representation that can navigate the intricate relationship between legitimate conduct and criminal behavior in witness-related scenarios.

For a free consultation, call our law firm toll free at (888) 928-1609 or contact us by email.

About the Author

Bulldog Law

Bulldog Law is a dedicated criminal defense, personal injury, and cryptocurrency dispute resolution firm with licensed attorneys and experienced support staff across California. Our team of trial attorneys, paralegals, and legal professionals brings decades of combined experience handling complex state and federal matters  including serious felonies, DUI, domestic violence, special education law, employment disputes, and high-stakes crypto fraud recoveries. We pride ourselves on thorough case preparation, aggressive advocacy, and personalized client service. Every blog post is researched and reviewed by members of our legal team to provide practical, up-to-date information for individuals and businesses facing legal challenges. If you need trusted legal representation or have questions about your case, contact Bulldog Law today at (888) 928-1609 for a confidential consultation. Offices throughout California including Glendale, Sacramento, San Francisco, San Diego, and more.

We offer criminal defense, immigration, personal injury and cryptocurrency legal services in both English and Spanish. Call us at (888) 928-1609 for a free consultation.


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