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Guam Federal Criminal Defense Attorneys

Our experienced federal criminal defense lawyers are available to represent military personnel, business owners, and other individuals facing investigations, grand jury proceedings, and criminal charges in Guam. Call us 24/7 at 888-680-1745 for a free case assessment.

If you are facing a federal criminal investigation or federal criminal charges in Guam, it is important that you speak with an experienced federal defense lawyer promptly. You need to do everything possible to avoid a conviction, as all major federal crimes carry substantial penalties. At Oberheiden P.C., we provide experienced defense representation for Guam residents, handling allegations ranging from drug crimes and money laundering to theft of government property and terrorist acts.

When you are suspected of committing a federal crime or taking part in a criminal conspiracy, defending yourself effectively requires a comprehensive understanding of the substantive and procedural laws that apply in federal criminal cases. From the elements of federal crimes to the steps involved in federal grand jury proceedings and criminal trials, virtually every aspect of a federal case is unique from a state-level prosecution on the U.S. mainland. For this reason, engaging a defense team with specific experience in federal cases is extremely important. If you trust your case to inexperienced defense counsel, you are going to be putting yourself at a disadvantage.

Fantastic lawyer - so dependable. We've worked with Nick for over 4 years and he is the best at what he does.
Denver F.
Denver F.
Attorney Lynette Byrd was so kind and helpful with my case. I would highly recommend her legal services.
Marcel L.
Marcel L.
Nick Oberheiden is an excellent attorney. He is hardworking, smart and intelligent.He takes a proactive approah on cases. He has dedicated team of former federal lawyers and investigators that are available to get results on cases. I recommend him highly.
Chris Q
Chris Q
Dr. Nick is acutely aware of the intricacies and subtleties of the relevant legal issues, and he is also gifted at explaining the issues in simple, easy-to-understand language. He has an outstanding rapport with the prosecutors - a critical talent for an Attorney trying to prevent prosecution or minimize criminal... exposure of his clients. He is a master of multi-tasking, so you can be rest assured that he is always up-to-date with your representation. I believe that his European background allows him to view the totality of your case from an extra “dimension,” which allows him to craft exceedingly effective strategies and proffers. His caring and empathetic attitude goes a long way in helping you to keep up your spirits through the process. I could not have hoped for a better outcome. I unreservedly recommend him - he is a true Master of the trade!read more
When your freedom, family, or fortune are at stake - it's best you meet Nick Oberheiden. Respected by the judges, his peers, colleagues, and clients - Nick is known to get results. Putting his keen intellect aside, one cannot help but appreciate his genuine desire to protect his clients and prevail. His cell number... is in my phone for good reason. And if I ever need him, I know he'll be there - ready to more
Michael D. W.
Michael D. W.

Federal Criminal Defense Attorneys Handling Cases in Guam

At Oberheiden, P.C., our practice is focused on federal defense. Our practice is also nationwide in scope, and our attorneys are available to handle cases throughout the United States, including Guam. We represent clients including licensed professionals, business owners, business executives, military personnel, public officials, and other individuals and corporate entities, and we rely on our attorneys’ centuries of combined federal experience to protect our clients from indictment, conviction, and sentencing whenever possible.

We represent individuals and businesses charged with all types of serious federal white-collar offenses. This includes, but is not limited to:

Regardless of the federal offense (or offenses) you are alleged to have committed, you will need to execute a strategic defense in order to avoid fines and prison time. Our attorneys can promptly intervene in the government’s case, determine the scope of the allegations against you, and work quickly to protect regardless of the facts at hand.

Learn more: How (and Why) to Choose a Federal Defense Attorney.

Put our highly experienced team on your side

Dr. Nick Oberheiden
Dr. Nick Oberheiden



John W. Sellers
John W. Sellers

Former Senior Trial Attorney
U.S. Department of Justice

Local Counsel

Joanne Fine DeLena
Joanne Fine DeLena

Former Assistant U.S. Attorney

Local Counsel

Joe Brown
Joe Brown

Former U.S. Attorney & Former District Attorney

Local Trial & Defense Counsel

Amanda Marshall
Amanda Marshall

Former U.S. Attorney

Local Counsel

Aaron L. Wiley
Aaron L. Wiley

Former Federal Prosecutor

Local Counsel

Roger Bach
Roger Bach

Former Special Agent (OIG)

Michael Koslow
Michael Koslow

Former Supervisory Special Agent (FBI)

Chris Quick
Chris Quick

Former Special Agent (FBI & IRS-CI)

Kevin M. Sheridan
Kevin M. Sheridan

Former Special Agent (FBI)

Ray Yuen
Ray Yuen

Former Supervisory Special Agent (FBI)

Dennis A. Wichern
Dennis A. Wichern

Former Special Agent-in-Charge (DEA)

Federal Criminal Defense FAQs: What Do Suspects, Targets, and Defendants Need to Know?

Q: How can I determine the allegations against me?

Many suspects and targets of federal investigations are surprised to learn that they cannot figure out why they are being investigated. During investigations, federal agents play their cards close to the vest, and they use suspects’ and targets’ lack of information to their advantage. If you don’t know why you are being investigated, you don’t know how to defend yourself, and you don’t know what information federal prosecutors might be able to use against you. As a result, federal authorities usually benefit from keeping suspects and targets in the dark for as long as possible.

When you engage Oberheiden P.C.’s defense team to represent you, our federal criminal defense attorneys will promptly intervene in the investigation in order to determine what charges are on the table. By communicating with the federal agencies that are investigating you and relying on our past experience in more than 1,000 federal cases, we can quickly discern the crime (or crimes) you are accused of committing.

Q: What is at risk if my federal criminal case goes to trial?

In federal criminal cases, there are several different types of penalties that federal prosecutors can pursue. Depending on the specific criminal statutes under which you are being targeted, possible penalties include:

  • Statutory fines
  • Federal probation
  • Federal imprisonment
  • Restitutio, recoupments, and damages
  • Loss of government contracts and future bidding eligibility 
  • Loss of federal program (i.e. Medicare, Medicaid, Tricare, or Veterans Affairs (VA)) eligibility 
  • Loss of federal registration (i.e. Drug Enforcement Administration (DEA) or Securities and Exchange Commission (SEC) registration) and a permanent bar from future registration 

Q: What if federal agents or prosecutors violated my constitutional rights?

Constitutional violations are more common than you might expect; and, despite centuries of precedent, several fundamental questions about just how far the constitution’s protections go remain unanswered. If you have any reason to believe that your constitutional rights may have been violated, our attorneys may be able to utilize this in your defense. For example, if federal agents conducted an unlawful search or seizure, then any evidence obtained as a result of the constitutional violation may be inadmissible in your federal criminal case. Of course, you will need to present evidence of the violation in court in order to have the unlawfully-obtained evidence excluded.

Are you accused of a federal crime?

Don't delay. Learn about your rights.

Call Dr. Nick Oberheiden now!


Q: What if I am not a permanent resident of Guam?

Our firm represents clients who reside in Guam and in all 50 states. If you are being accused of committing a federal crime while you were in Guam, or if you have been detained in Guam on suspicion of a federal crime, our attorneys can still represent you.

Q: At what point is it necessary to talk to a federal criminal defense attorney?

If you have any reason to suspect that you might be under investigation by federal authorities, you should speak with a federal criminal defense lawyer as soon as possible. Waiting until you get charged to seek legal representation is a mistake, as it is often possible to favorably resolve federal criminal investigations before charges get filed. If you have been contacted by investigators from any of the following agencies (among others), we encourage you to contact us right away:

  • Centers for Medicare and Medicaid Services (CMS)
  • Drug Enforcement Administration (DEA)
  • Federal Bureau of Investigation (FBI)
  • Internal Revenue Service (IRS)
  • Office of Inspector General (OIG)
  • U.S. Department of Defense (DOD)
  • U.S. Department of Justice (DOJ)
  • U.S. Department of Veterans Affairs (VA)

Q: If I didn’t commit a crime, do I still need to be worried?

Probably. At the very least, you should discuss your situation with an attorney. The reasons for this are twofold:

First, even if you don’t think you committed a federal crime, you could be wrong. The U.S. Code outlines numerous federal crimes, and it is very possible that federal agents are investigating you for an offense of which you are entirely unaware.

Second, even if you are correct in believing that you have not committed a substantive crime, you could still be guilty of the inchoate offenses of attempt and conspiracy. Under various statutes, attempting to commit a federal crime is punished equally with “successfully” committing a substantive offense; and, under the federal conspiracy statute, 18 U.S.C. § 371, all “co-conspirators” can face statutory fines and up to five years behind bars.

Q: How can a federal criminal defense lawyer help me if I am guilty?

To be clear, regardless of the circumstances at hand, you should never assume that you will be found guilty of a federal crime. While the complexity of the U.S. Code means that there are many different federal crimes, this complexity can also work to defendants’ advantage. Additionally, even if you taken all of the steps necessary to commit a federal offense, you could have defenses (such as the constitutional defenses discussed above) that entitle you to a dismissal or not-guilty verdict in court.

Q: A federal agent approached me at home or at work. Does this mean I am under investigation?

If you have been approached by federal agents, this can mean one of two things: (i) the agents have reason to believe that you have information about a federal crime, or (ii) the agents are investigating you as a suspect or target. For a variety of reasons, they are not likely to tell you which one of these is the case.

However, regardless of whether you are currently being treated as a witness, suspect, or target, you need to be very careful to avoid sharing information that could eventually be used against you. For more information on how to protect yourself, read: What Should I Do When FBI Agents Show Up at My House to Interview Me?

Q: Why should I choose Oberheiden P.C. to represent me in Guam?

Our practice is nationwide in scope, and our record in federal criminal cases speaks for itself. If you are at risk for federal prosecution, you need to know that your defense team is capable of representing you effectively. At Oberheiden P.C., our team of career defense lawyers and former DOJ prosecutors is prepared to do whatever is necessary to defend you, and we can begin working on your defense immediately if necessary.

Schedule a Free and Confidential Case Assessment – We are Available 24/7

Do you need to speak with a federal criminal defense attorney about a matter in Guam? For a free and confidential case assessment at Oberheiden P.C., call 888-680-1745 or contact us online now.

Why Clients Trust Oberheiden P.C.

  • 1,000+ Cases Handled
  • Available Nights & Weekends
  • Experienced Trial Attorneys
  • Former Department of Justice Trial Attorneys
  • Former Federal Prosecutors, U.S. Attorney’s Office
  • Former Agents from FBI, OIG, DEA
  • Cases Handled in 48 States
Email Us Call: 888-680-1745