How Are Federal Criminal Cases Different From State Cases in Texas?
Federal criminal cases are prosecuted by the U.S. Department of Justice in U.S. District Court — governed by federal statutes, the Federal Rules of Criminal Procedure, and the U.S. Sentencing Guidelines rather than Texas state law. Federal investigations run months to years before charges are filed. Federal conviction rates exceed 90% in the Southern District of Texas. The key differences — and why a federal crimes lawyer Houston evaluates each of them before deciding how to approach a specific case:
Federal cases begin with grand juries that operate in secret. If you've received a subpoena or been contacted by federal agents, you likely have more time than you think — but you need a lawyer immediately.
Federal sentences are calculated using the U.S. Sentencing Guidelines — a complex matrix of offense level and criminal history. Herman navigates guideline calculations and argues for downward departures and variances.
Federal agents investigate for months or years before charging. By the time you're indicted, the government has built an extensive case. Early intervention — before indictment — is often the most powerful defense move.
Most federal cases resolve by plea, but Herman prepares every case as if it will go to trial. That preparation is what produces the best plea outcomes and wins the cases that go to a jury.
What Federal Criminal Cases Does Herman Martinez Defend in Houston?
Herman Martinez defends the full spectrum of federal criminal charges prosecuted in the U.S. District Court for the Southern District of Texas. Federal cases differ from state prosecution in investigative scope, evidentiary standards, sentencing exposure, and discovery rules — all requiring attorneys who practice specifically in federal court. Below are the primary federal offense categories he handles. A federal crimes lawyer Houston who practices specifically in the Southern District knows the tendencies of the judges and prosecutors handling these cases.
How Does Herman Minimize Federal Sentences in the Southern District of Texas?
Federal sentencing in the Southern District of Texas follows the U.S. Sentencing Guidelines — a point-based matrix that calculates the recommended range from the offense level and criminal history score. Herman attacks the guideline calculation directly: disputing drug quantity, contesting role enhancements, and challenging the loss figure that drives the offense level. He then argues for additional reductions through three mechanisms. A federal crimes lawyer Houston fights the guideline calculation itself before ever discussing acceptance of responsibility:
The Sentencing Guidelines allow for downward departures in specific circumstances — substantial assistance to the government, minimal role in the offense, or the guidelines overstating the seriousness of the conduct.
After United States v. Booker, federal judges have discretion to sentence outside the Guidelines based on the § 3553(a) factors. Herman presents compelling narratives around family circumstances, history, rehabilitation, and the nature of the offense.
When appropriate, Herman negotiates cooperation agreements that can result in sentence reductions through a 5K1.1 motion. These decisions require careful strategic analysis — cooperation has real risks alongside its benefits. A federal crimes lawyer Houston walks clients through the real risks of cooperation before any conversation with the government occurs.
Federal drug trafficking charges frequently arise alongside state-level drug offenses. Herman defends both tracks — see the full analysis on drug crime defense in Houston for the Texas Controlled Substances Act penalty groups that apply to state charges. For professionals facing federal license revocation alongside criminal charges, see the page on defense for licensed professionals. A federal crimes lawyer Houston coordinates federal and state exposure together whenever both tracks are in play.
What Happens During a Federal Target Letter or Proffer Session?
A target letter is formal written notice from a U.S. Attorney's Office that a person is a target of a federal grand jury investigation — meaning prosecutors already believe they have substantial evidence linking that person to a crime. Receiving one is not itself a charge, but it signals that an indictment may follow soon unless something changes the trajectory of the investigation. A proffer session, sometimes called a "queen for a day" meeting, is a formal interview where a person answers prosecutors' questions under a limited-use immunity agreement, typically as a step toward a cooperation agreement or to persuade the government not to charge at all. Proffer agreements are heavily negotiated documents with real limits on what protection they actually provide — statements made can still be used for impeachment or to develop other evidence, even when they cannot be used directly against the person in the government's case-in-chief. A federal crimes lawyer Houston reviews every word of a target letter and negotiates the terms of any proffer agreement before a client says anything to federal investigators, because the wrong answer in an unprotected setting can turn a target into a defendant.
Federal Defense Questions
Below are the most frequently asked questions about federal criminal defense in the Southern District of Texas — covering grand jury subpoenas, bail, sentencing guidelines, cooperation agreements, and the investigative process.
Call an attorney immediately — before talking to anyone. Being a "person of interest" or "witness" does not protect you from becoming a defendant. Anything you say to federal investigators is used to build the case. Herman can intervene before charges are filed, often producing dramatically better outcomes than waiting for indictment. A federal crimes lawyer Houston retained before an indictment can sometimes prevent charges from being filed at all.
In many federal cases, yes. Under the Bail Reform Act, the court considers flight risk and danger to the community. Herman argues aggressively for release — presenting community ties, employment, family, and the nature of the charges to the magistrate judge at the detention hearing.
Yes. Herman handles federal cases in the U.S. District Court for the Southern District of Texas, which covers Houston, Galveston, Corpus Christi, and surrounding areas. He is admitted to practice in federal court and has experience with federal prosecution practices specific to this district.
Federal cases involve FBI, DEA, IRS, or other federal agencies — with significantly more investigative resources than local police. Federal prosecutors have prepared cases for months or years before an indictment. Federal conviction rates exceed 90%, and federal sentences are often longer with no parole. Early legal intervention is critical. A federal crimes lawyer Houston prepares differently for federal court than for a standard state court case.
The Federal Sentencing Guidelines create a recommended sentencing range based on the offense level and the defendant's criminal history. While advisory (not mandatory since United States v. Booker), judges follow them in the majority of cases. Herman works to reduce the offense level through challenges to the indictment, cooperation credit, and mitigating factors that lower the guideline range.
Cooperation can result in a substantial assistance motion (§5K1.1) allowing a sentence below the mandatory minimum — but cooperation is high-risk. You must provide truthful information about others, and agreements can be withdrawn. This is a complex, irreversible decision that requires experienced counsel before any conversations begin. A federal crimes lawyer Houston walks through every angle of a cooperation decision before a client ever speaks to the government.
A grand jury subpoena requires you to appear before a grand jury and testify or produce documents. You have Fifth Amendment rights against self-incrimination. Do NOT appear without an attorney. Herman can review the subpoena, assert your rights, and advise whether you should testify, invoke the Fifth Amendment, or negotiate with prosecutors before the appearance.
Yes — through pre-trial motions to suppress evidence (illegal searches), dismiss the indictment (defective charging), or exclude witnesses. Federal prosecutors sometimes dismiss charges before trial when a strong defense motion reveals fatal weaknesses in their case. Pre-trial litigation is often as important as the trial itself.
Herman defends federal drug trafficking, federal firearms charges, wire fraud and bank fraud, money laundering, federal conspiracy charges, RICO violations, immigration offenses, and federal sex crimes. Each category carries unique sentencing exposure and procedural rules that require a defense attorney experienced specifically in federal court. A federal crimes lawyer Houston with experience across these categories tailors the defense strategy to the specific federal statute charged.
Yes. Federal convictions are permanent and there is no federal expungement statute for adult convictions. They appear on background checks, affect professional licenses, and result in the loss of civil rights (voting, firearms, jury service). This is why fighting federal charges aggressively — rather than accepting a plea quickly — is so important. A federal crimes lawyer Houston treats every federal case as a fight worth having, precisely because there is no expungement safety net afterward.