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18 U.S.C. § 371 Federal Conspiracy Defense Attorney in San Diego

In brief: This page explains federal conspiracy charges under 18 U.S.C. § 371: what prosecutors must prove, how these investigations begin, the penalties, and possible defenses. Federal charges in San Diego are prosecuted in the U.S. District Court for the Southern District of California (S.D. Cal.). Vikas Bajaj has practiced law in California since 2001, handles federal court work in S.D. Cal., and takes a methodical approach to every case. If federal agents contact you, you can decline to answer questions until you have spoken with a lawyer.

Vikas Bajaj, Attorney at Law · Last reviewed: October 31, 2026

Under 18 U.S.C. § 371, “If two or more persons conspire either to commit any offense against the United States, or to defraud the United States, or any agency thereof in any manner or for any purpose, and one or more of such persons do any act to effect the object of the conspiracy, each shall be fined under this title or imprisoned not more than five years, or both.” Conspiracy counts are one part of federal criminal defense in San Diego.

For more on defending against guilt by association, see our guide.

How I approach a § 371 conspiracy case

I personally handle each client’s case. Because 18 U.S.C. § 371 punishes the agreement itself, my first job is to test whether there really was an agreement, and whether my client knowingly joined it.

  • Which clause is charged. Section 371 has two clauses: conspiracy to commit an offense against the United States, and conspiracy to defraud the United States. The defraud clause reaches agreements to interfere with or obstruct a lawful government function “by deceit, craft or trickery, or at least by means that are dishonest” (Hammerschmidt v. United States, 265 U.S. 182 (1924)). I read the indictment to see which theory the government picked and whether the facts actually fit it.
  • The overt act and the timeline. Unlike a drug conspiracy under 21 U.S.C. § 846, § 371 requires an overt act by at least one conspirator. The five-year limitations period (18 U.S.C. § 3282) generally runs from the last overt act, so I build a dated timeline of every act the government relies on.
  • Co-conspirator liability. Prosecutors may try to hold a person responsible for crimes other members committed in furtherance of the conspiracy if they were reasonably foreseeable (Pinkerton v. United States, 328 U.S. 640 (1946)). I look hard at where my client’s involvement started and stopped. If a client left the group, the law puts the burden of proving withdrawal on the defense (Smith v. United States, 568 U.S. 106 (2013)), so the evidence of that withdrawal has to be gathered early.
  • Cooperating witnesses. Promises made to a government witness must be disclosed to the defense (Giglio v. United States, 405 U.S. 150 (1972)). I review every benefit they were promised and every prior statement they gave.
  • Sentencing exposure. The statutory maximum is five years (lower if the object offense is a misdemeanor), but the Sentencing Guidelines generally use the guideline for the underlying offense (USSG §2X1.1). I explain realistic exposure early, before anyone decides whether to talk to the government.

I have practiced law in California since 2001, earned my J.D. at The University of Texas at Austin School of Law, and represent clients in California state courts and the U.S. District Court for the Southern District of California. I also provide legal analysis of criminal cases on Fox News, FOX 5 and KUSI. No lawyer can promise an outcome, and this page is general information, not legal advice about your case. — Vikas Bajaj


Fine exposure under 18 U.S.C. § 371

The maximum fine and felony class for a 18 U.S.C. § 371 conspiracy conviction come from the general federal sentencing statutes (18 U.S.C. § 3571; 18 U.S.C. § 3559); the statutory text is quoted on our bank fraud defense page.

18 U.S.C. § 371 conspiracy cases charged in San Diego move through the U.S. District Court for the Southern District of California under the Federal Rules of Criminal Procedure (Fed. R. Crim. P. 5). The stages, the downtown courthouses, release and detention, and the general limitations period are explained once, in full, in our guide to how a San Diego federal criminal case works.

What happens after a federal charge in San Diego

18 U.S.C. § 371: statutory text, penalties and process, with sources

Sources are linked inline to the statute, rule, court or agency that states each point.

The statute, verbatim

18 U.S.C. § 371: “If two or more persons conspire either to commit any offense against the United States, or to defraud the United States, or any agency thereof in any manner or for any purpose, and one or more of such persons do any act to effect the object of the conspiracy, each shall be fined under this title or imprisoned not more than five years, or both. If, however, the offense, the commission of which is the object of the conspiracy, is a misdemeanor only, the punishment for such conspiracy shall not exceed the maximum punishment provided for such misdemeanor.”

Elements and defenses that follow from the text

  • An agreement between “two or more persons.” (§ 371)
  • An object that is either an “offense against the United States” or to “defraud the United States, or any agency thereof.” (§ 371)
  • An overt act by one conspirator “to effect the object of the conspiracy.” (§ 371)

Each element of § 371 is a point of defense: no agreement, no knowing participation, or no overt act. Where the object is a misdemeanor, the statute caps punishment at the misdemeanor maximum.

Guidelines

Unless a specific guideline covers the conspiracy, USSG §2X1.1 uses “the base offense level from the guideline for the substantive offense,” plus adjustments for intended conduct “that can be established with reasonable certainty” (2026 Guidelines Manual).

Frequently Asked Questions (FAQs)

Q: Can I be convicted if the alleged crime was never completed?

A: Yes. 18 U.S.C. § 371 requires that persons “conspire” and that one of them “do any act to effect the object of the conspiracy.” It does not require that the object offense be completed.

Q: Is simply knowing someone involved in a conspiracy enough to be charged?

A: No. 18 U.S.C. § 371 punishes persons who “conspire,” which means agreeing with another person to commit an offense or to defraud the United States. Knowing someone who is involved is not, by itself, an agreement.

Q: Can I be charged even if I never personally committed the underlying offense?

A: Yes. Under 18 U.S.C. § 371, only “one or more of such persons” must commit the overt act, and “each shall be” punished. Separately, co-conspirators can be held liable for reasonably foreseeable crimes committed in furtherance of the conspiracy (Pinkerton v. United States, 328 U.S. 640 (1946)).

Q: When should I hire an attorney?

A: As soon as you learn you are under investigation. Statements to agents can be used as evidence, and the Fifth Amendment protects the right not to be “compelled in any criminal case to be a witness against himself.” The limitations period is generally five years under 18 U.S.C. § 3282.

Contact the office to talk with Vikas Bajaj about a § 371 investigation or charge. He will review what you know about the case, explain the process and your options, and tell you candidly what he sees.

Related guides: Federal crimes defense · 21 U.S.C. § 846 drug conspiracy · 18 U.S.C. § 1001 false statements · RICO

What happens next

  1. Call or send the form. Reach the office at (619) 525-7005 or use the contact form.
  2. A confidential consultation with Vikas. You speak directly with attorney Vikas Bajaj about your situation.
  3. A plan for your case. You leave with a clear plan for the next steps.