US District Courts are trial courts, the entry point of the federal court system. A case reaches the federal district courts when someone commits a federal crime or is sued under federal jurisdiction.
This depends on the federal trial court's jurisdiction and what type of case it is.
For a civil subject matter case, the case can can be (but don't have to be) filed in federal court if one of two things are true:
a) diversity jurisdiction: plaintiff and defendant are from different states AND
there is more than $75,000 at stake OR
b) federal question jurisdiction: a basic part of the plaintiff's case is a question
arising under the Constitution, laws, or treaties of the U.S.
Example of a: Plaintiff citizen of Wisconsin. Defendant citizen of Indiana. Plaintiff suing defendant for $80,000. Case can be filed in federal court because diversity and more than $75,000.
There are many cases where the federal courts have criminal subject matter jurisdiction over violates of federal criminal statutes. If the person violates a federal law, federal courts have jurisdiction.
Federal courts also have exclusive jurisdiction over certain cases, such as bankruptcy cases, which means that bankruptcy can ONLY be filed in a federal court. Another example would be patents - only a federal court can deal with patents.
Added: To answer the direct question, cases can get to federal court if they are 1) initially filed in federal court or 2) removed to federal court from state court.
By filing an appeal of the District Courts ruling with the Court of Appeals for that Federal District.
A 'higher' court will hear an appeal from a 'lower' court
An appeal.
Appeal the decision of the court.
It means that they want another shot at the case or they think the lower court was wrong, so they appeal to a higher case which reviews the lower court's decision for an error in law and facts. If they win on appeal, the appellate court either rules in their favor or remands (returns) the case back to the lower court to redecide.
That means a case heard in a trial court was appealed to an appellate court; the appellate court agreed with the lower court's decision, and determined the case was conducted properly. When this happens, the appellate court "affirms" the trial court decision, and that decision becomes final unless the case is carried to a higher appellate court that reverses the trial court's decision.
You are asking a higher court to review and overrule the finding of a lower court.
Court reversal refers to the process in which a higher court overturns or invalidates a decision made by a lower court. This typically occurs when the higher court concludes that the lower court made an error in interpreting or applying the law. When a court reversal occurs, the decision of the higher court becomes the final ruling in the case.
The case is re-tried, or perhaps (at the option of the prosecution) the charges may be dropped or reduced.
The case must first be heard at the lowest level of court. Most states have a court system that exists in the same area as a federal magistrate court or federal district court. The case must be decided by the lower court and appealed to a higher court. In the federal system this is the circuit court. Once all the lower courts have been exhausted, the lawyers may apply to be heard by the Supreme Court. The Supreme Court will determine which cases it will hear.
asking for an appealasking for a writ of certiorari
Taking a particular case to a higher court is known as an appeal.
a court for someone who has lost a case in a lower court