Too indefinite a question - not certain what is being asked.
The district courts exercise original jurisdiction over -that is, they are empowered to conduct trials in-the following types of cases:
This cannot be answered. In order for this to be answered you will have to give me some chooses to choice from.
That it involves a question of federal law or that the federal court has jurisdiction for some other reason, such as diversity.
Appellate courts in the Judicial Branch of the federal government have jurisdiction (power, authority) to review lower court decisions if the case is sent to them on appeal. Judges don't go looking for cases to review.Generally,* in order for a state case to be removed to federal court, the case must involve a a federal question. A "federal question" is one that involves matters related to federal law, the US Constitution or a US Treaty. State cases appealed to the US Supreme Court additionally must have exhausted all avenues of appeal in the state court system, and the federal question must have been "preserved," meaning it have been raised at trial and at each subsequent level of appeal.* There are some exceptions, but including them would make the answer to this question unnecessarily complex (some people may think it already is).
There are different levels of courts. In most states, the primary state-level court is the "Superior Court" of each county. It can be called other things, though, depending on the state. The next-higher court in most states is the state Supreme Court. Some states, though, have some kind of appellate court in between. At the federal level, it's similar. There are US District Courts, and then Federal Courts of Appeals (appellate courts) just above them, and then the US Supreme Court above them. In both cases, the appellate court (the "appeals court") is tasked with the responsibility of reviewing the lower court's ruling and determining if the law was properly followed. If the lower court made a mistake (called "judicial error"), and if said judicial error was sufficiently important that it could have influenced the outcome of the case, then the appeals court will rule that the lower court made a mistake and that the case needs to be retried, or some part of it needs to be re-heard, or whatever is the appellate court's ruling. If the losing party doesn't agree with the appellate court's ruling, then it can appeal to the next-higher court: The Supreme Court. The Federal Court system is not a super appellate court for state court appeals. No state court rulings are ever appealed to the Federal District Court or Courts of Appeals. In the event a federal question (that is one involving federal law or the U. S. Constitution) is raised in a state court, the appeal process goes through the usual state court system. If a party disagrees with the State Supreme Court's interpretation of the federal question, the State Supreme Court's ruling may be appealed to the United States Supreme Court provided the US Supreme Court issues a writ of certiorari and agrees to hear the case. If the cases started out in the Federal District Court (because it was a federal, and not a state case), then the Federal Court of Appeals is who reviews it, on appeal, for judicial error; and the US Supreme Court is the next-highest court after that. Once the US Supreme Court rules, then it's over. That's the highest court in the land. There are no more appeals after that.
No. Article III of the Constitution requires the federal government to establish and maintain a Supreme Court, and prevents Congress from removing individual justices except by impeachment. Congress has some control over the structure of all the federal courts, but it doesn't have the power to dissolve the US Supreme Court.
If a federal court only has appellate jurisdiction it can only hear appeals of cases that have been tried in lower federal courts and can't conduct its own trials.For example, the US Court of Appeals Circuit Courts have only appellate jurisdiction, primarily over cases tried in the 94 US District Courts.The Supreme Court of the United States is a federal court with appellate jurisdiction; however, it also exercises original jurisdiction over disputes between the states. The Supreme Court may review appeals from both federal and state courts, as long as the appeal contains a (preserved) federal question. This means the case must involve federal law, US treaties, or US Constitutional issues.
A court of appeals has the jurisdiction to hear appeals. Some appeals are mandatory and the court has to hear them. Other appeals are discretionary and the court of appeals may deny to hear them.
There are two lower federal court systems. One is the United States District Courts, of which there are 94 district and territorial courts through the United States and its territories and possessions. These are usually considered trial courts. Above the federal district courts are the United States Courts of Appeal, of which there are 13 circuits, numbered one through eleven, and the United States Court of Appeal for the District of Columbia Circuit and the United States Court of Appeal for the Federal Circuit. These are usually considered appellate courts, to which cases decided by the district courts are, in some cases, appealed to. The 11 circuit courts and the District of Columbia circuit court are courts that have geographical areas of jurisdiction, and the U.S. Court of Appeal for the Federal Circuit is an appellate court having certain subject-matter jurisdiction.
No. The Constitution allows federal judges to be impeached for "high crimes and misdemeanors," the same as the US President. The Judiciary Act of 1801 reorganized the federal court system and added six new circuit courts that relieved the Supreme Court justices of their circuit riding responsibilities and shifted some judicial power from the states to the federal government.
Division of powers
They really can't reject federal law. The federal law is over state law. Some states who have done this loose federal money and have been taken to court. The Supreme Court has ruled over several cases.
When a case is "removed" to federal court, it was originally filed in State court, but then was "removed" or moved to federal court because it presents some sort of federal law issue. An "answer" is when, in the most common case, a defendant "answers" the claims the plaintiff has made against them.