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As one may remember from civics class, there are three branches of government: legislative, executive, and judicial. The legislative branch creates the laws, the executive branch enforces the laws, and the judicial branch interprets the laws. Laws also are called statutes or codes. The executive branch can create rules or regulations to govern its administrative procedures and the judicial branch also may interpret these rules or regulations.
When a case is heard in a court, the court applies the law to the facts of the case and a decision is made. There are many sources of law the court uses in making its decision: the United States Constitution, the Texas Constitution, statutes, regulations, and the court's prior decisions or decisions made by higher courts (case law). The way in which a court answers a legal question is binding on all lower courts within that jurisdiction when faced with the same legal question. For example, if the Texas Supreme Court decides a particular legal question, all state courts in Texas must follow that decision. However, state courts in Oklahoma would not have to follow the Texas decision because they are in a different jurisdiction.
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