Criminal defense strategy looks nothing alike from one charge to the next, even when the underlying legal system is the same. A self-defense claim in an assault case and a repeat DWI charge get built on entirely different legal frameworks — one turns on whether a person’s actions were justified in the moment, the other turns on prior convictions and how the law treats someone facing a charge for the third time. Understanding which framework applies to a given situation changes almost everything about how a case gets approached from the first meeting forward.
A Defense Strategy Starts With Which Legal Framework Actually Applies

Before any specific defense theory gets built, the first question is which body of law governs the situation, and criminal charges in Texas span a wide enough range that no single approach fits all of them. Assault and violent-crime charges often hinge on justification defenses like self-defense, while charges like DWI turn much more on prior record, breath or blood test procedure, and statutory sentencing enhancements that have nothing to do with the defendant’s state of mind at the time of the offense.
Austin Hagee Law Firm generally starts by identifying which of these frameworks actually applies to a given charge before building out any specific strategy, since misreading which legal theory is even available — treating a case as a straightforward self-defense matter when it’s really governed by prior-offense sentencing rules, for example — wastes time a defendant often doesn’t have given how quickly early deadlines move in a criminal case.
Self-Defense Claims Turn on Reasonableness, Not Just What Happened
Texas law justifies the use of force when a person reasonably believes it’s immediately necessary to protect against another person’s unlawful use of force, and the actual statute — Texas Penal Code Sections 9.31 and 9.32 — builds in a presumption of reasonableness in specific circumstances, most notably when someone is defending their home, vehicle, or workplace against an unlawful and forceful entry. That’s the core of what’s commonly called the castle doctrine, and it removes the traditional duty to retreat inside those specific locations, extending a similar no-retreat principle to public places under certain conditions as well.
The presumption of reasonableness isn’t automatic in every situation, though, which is where a lot of self-defense claims actually get contested. It generally doesn’t apply if the person claiming self-defense provoked the confrontation, was engaged in criminal activity at the time, or used force disproportionate to the actual threat faced. Someone researching texas self defense laws after an incident is often trying to figure out whether their specific facts fall inside or outside those exceptions, since the presumption doing the heavy lifting in one case might not apply at all in a factually similar-looking one.
A Third DWI Charge Changes the Legal Category Entirely
DWI charges escalate differently than most other offenses, since Texas counts prior convictions rather than treating each charge in isolation. A first DWI is typically a Class B misdemeanor, a second bumps up to a Class A misdemeanor, and a third conviction moves the charge into felony territory entirely, carrying a substantially different range of potential penalties and collateral consequences than either of the first two. That jump matters enormously for anyone facing a third charge, since the legal exposure isn’t simply “more of the same” — it’s a fundamentally different category of offense with its own sentencing framework.
Someone facing a third DWI offense in Texas is also dealing with a case where the prior convictions themselves become part of the evidentiary picture, which raises separate questions about how those older cases were handled, whether any procedural issues existed in the earlier convictions, and how the state intends to prove them as part of the current charge. According to NHTSA’s national data on impaired driving, repeat offenders make up a meaningful share of DWI arrests nationally, which is part of why states including Texas have built escalating penalty structures specifically targeting repeat conduct rather than treating every DWI charge under the same baseline framework.
The Facts of a Case Decide the Strategy Long Before Any Argument Does
Self-defense and repeat-offense DWI cases share almost nothing in terms of legal theory, but they share one thing in common: the specific facts of what happened, and when, and under what circumstances, end up mattering more than any general rule of law. A castle doctrine presumption can evaporate over a single disputed fact about who provoked a confrontation, and a felony DWI enhancement can turn on whether a decade-old conviction was actually final under the law at the time it’s being counted. Getting those specific facts straight early, rather than assuming the general rule will simply apply, tends to be where a case actually gets decided.
