If you mean United States District Courts commonly referred to as "federal court", by law it is the U.S. Marshals Service.
U.S. District Courts because, federal crimes are defined as; crimes defined by or mentioned in the U.S. Constitution or those defined and/or punished by federal statutes, usually codified and set forth in the U.S. Codes. Crimes such as treason against the United States, piracy, counterfeiting, and crimes relating to the federal government's authority to regulate interstate commerce. However, most criminal acts prosecuted in this country are state matters.Another View: Short answer - A federal case is ANY case in which the US District Court has original jurisdiction.
By acts of Congress.
First level is the federal district courts. Most lawsuits brought in the federal system start in the district court (although some go directly from state courts to the U.S. Supreme Court). The case must be brought in the district court that is related to the defendant or where the incident occurred.The second level is the federal courts of appeals. As the name suggests, those who believe that the district court has misapplied the law or abused its discretion in the handling of their case appeal to these courts. The appeals courts within a circuit attempt to apply the law consistently within their circuit. They are bound only by the Congress and by U.S. Supreme Court, not the holding of the other circuits.The third level is the U.S. Supreme Court. Some types of cases may be brought directly in the Supreme Court, but most travel from the federal district court through a circuit court of appeals, to the Supreme Court. The Supreme Court has four primary roles: determining if acts of the U.S. Congress are constitutional; reviewing state laws and court decisions for conflicts with the Constitution and acts of Congress; adjudicating conflicts between the states; and resolving conflicts between the federal circuit courts of appeals.The case must involve federal statutes or regulations, constitutional rights, suits between states, or suits between citizens of different states. Cases involving constitutional issues such as the right of privacy are brought in the federal courts. Cases involving antitrust law, racketeering law, and Medicare/Medicaid laws are brought in the federal courts because these are federal laws that were broken.The three levels are U.S. District Court, U.S. Court of Appeals, and the U.S. Supreme Court.
The Federal Judiciary Act
By acts of Congress.
The Constitution established only one federal court, the Supreme Court. It left to Congress the job of creating the federal court system. Congress has created two types of federal courts, District and Courts of Appeals . It has also enacted laws dealing with the size and function of the Supreme Court.
The United States Court of Appeals for the Federal Circuit is the only federal court with jurisdiction that is defined by subject matter as opposed to geographic area. There are eleven other number circuits covering the geographic area of the United States, and one Federal Circuit for Washington, D.C.The United States Court of Appeals for the Federal Circuit hears appeals from specialized trial courts, such as the United States Court of Federal Claims, and complaints arising under the patent laws. Unlike other federal courts of appeals, it hears appeals from all district courts. Uniquely, the Federal Circuit has binding precedent for the entire U.S. within the jurisdiction of its subject matter. This is unlike other Federal Courts of Appeals which have binding precedent over a geographic region, and can result in differing interpretations of federal law (commonly known as "Circuit Splits"). This typically means that in regards to its subject matter, the Federal Circuit is typically the last word, as most of its cases will not be heard by the US Supreme Court.AnswerThe jurisdiction is different.There are thirteen United States Courts of Appeals Circuit Courts comprising the intermediate appellate step between the District Courts and the Supreme Court.The United States Court of Appeals for the Federal Circuit is the only court with nationwide jurisdiction over courts with special subject matter jurisdiction, such as appeals from:US Court of Federal ClaimsUS Court of International TradeUS Court of Veterans' ClaimsUS Trademark Trial and Appeal Boardpatent casesUS contractor disputesappeals from several departmental boards and commissionsappeals under certain Acts of Congress.The other twelve US Court of Appeals Circuit Courts have territorial jurisdiction over US District Courts located within Circuit's regional parameters. US District Courts have original (trial) jurisdiction over cases of general jurisdiction (the majority of federal civil and criminal cases) that occur within the boundaries of their district.
The United States Court of Appeals for the Federal Circuit is the only federal court with jurisdiction that is defined by subject matter as opposed to geographic area. There are eleven other number circuits covering the geographic area of the United States, and one Federal Circuit for Washington, D.C.The United States Court of Appeals for the Federal Circuit hears appeals from specialized trial courts, such as the United States Court of Federal Claims, and complaints arising under the patent laws. Unlike other federal courts of appeals, it hears appeals from all district courts. Uniquely, the Federal Circuit has binding precedent for the entire U.S. within the jurisdiction of its subject matter. This is unlike other Federal Courts of Appeals which have binding precedent over a geographic region, and can result in differing interpretations of federal law (commonly known as "Circuit Splits"). This typically means that in regards to its subject matter, the Federal Circuit is typically the last word, as most of its cases will not be heard by the US Supreme Court.AnswerThe jurisdiction is different.There are thirteen United States Courts of Appeals Circuit Courts comprising the intermediate appellate step between the District Courts and the Supreme Court.The United States Court of Appeals for the Federal Circuit is the only court with nationwide jurisdiction over courts with special subject matter jurisdiction, such as appeals from:US Court of Federal ClaimsUS Court of International TradeUS Court of Veterans' ClaimsUS Trademark Trial and Appeal Boardpatent casesUS contractor disputesappeals from several departmental boards and commissionsappeals under certain Acts of Congress.The other twelve US Court of Appeals Circuit Courts have territorial jurisdiction over US District Courts located within Circuit's regional parameters. US District Courts have original (trial) jurisdiction over cases of general jurisdiction (the majority of federal civil and criminal cases) that occur within the boundaries of their district.
The United States Court of Appeals for the Federal Circuit is the only federal court with jurisdiction that is defined by subject matter as opposed to geographic area. There are eleven other number circuits covering the geographic area of the United States, and one Federal Circuit for Washington, D.C.The United States Court of Appeals for the Federal Circuit hears appeals from specialized trial courts, such as the United States Court of Federal Claims, and complaints arising under the patent laws. Unlike other federal courts of appeals, it hears appeals from all district courts. Uniquely, the Federal Circuit has binding precedent for the entire U.S. within the jurisdiction of its subject matter. This is unlike other Federal Courts of Appeals which have binding precedent over a geographic region, and can result in differing interpretations of federal law (commonly known as "Circuit Splits"). This typically means that in regards to its subject matter, the Federal Circuit is typically the last word, as most of its cases will not be heard by the US Supreme Court.AnswerThe jurisdiction is different.There are thirteen United States Courts of Appeals Circuit Courts comprising the intermediate appellate step between the District Courts and the Supreme Court.The United States Court of Appeals for the Federal Circuit is the only court with nationwide jurisdiction over courts with special subject matter jurisdiction, such as appeals from:US Court of Federal ClaimsUS Court of International TradeUS Court of Veterans' ClaimsUS Trademark Trial and Appeal Boardpatent casesUS contractor disputesappeals from several departmental boards and commissionsappeals under certain Acts of Congress.The other twelve US Court of Appeals Circuit Courts have territorial jurisdiction over US District Courts located within Circuit's regional parameters. US District Courts have original (trial) jurisdiction over cases of general jurisdiction (the majority of federal civil and criminal cases) that occur within the boundaries of their district.
The United States Court of Appeals for the Federal Circuit is the only federal court with jurisdiction that is defined by subject matter as opposed to geographic area. There are eleven other number circuits covering the geographic area of the United States, and one Federal Circuit for Washington, D.C.The United States Court of Appeals for the Federal Circuit hears appeals from specialized trial courts, such as the United States Court of Federal Claims, and complaints arising under the patent laws. Unlike other federal courts of appeals, it hears appeals from all district courts. Uniquely, the Federal Circuit has binding precedent for the entire U.S. within the jurisdiction of its subject matter. This is unlike other Federal Courts of Appeals which have binding precedent over a geographic region, and can result in differing interpretations of federal law (commonly known as "Circuit Splits"). This typically means that in regards to its subject matter, the Federal Circuit is typically the last word, as most of its cases will not be heard by the US Supreme Court.AnswerThe jurisdiction is different.There are thirteen United States Courts of Appeals Circuit Courts comprising the intermediate appellate step between the District Courts and the Supreme Court.The United States Court of Appeals for the Federal Circuit is the only court with nationwide jurisdiction over courts with special subject matter jurisdiction, such as appeals from:US Court of Federal ClaimsUS Court of International TradeUS Court of Veterans' ClaimsUS Trademark Trial and Appeal Boardpatent casesUS contractor disputesappeals from several departmental boards and commissionsappeals under certain Acts of Congress.The other twelve US Court of Appeals Circuit Courts have territorial jurisdiction over US District Courts located within Circuit's regional parameters. US District Courts have original (trial) jurisdiction over cases of general jurisdiction (the majority of federal civil and criminal cases) that occur within the boundaries of their district.
The United States Court of Appeals for the Federal Circuit is the only federal court with jurisdiction that is defined by subject matter as opposed to geographic area. There are eleven other number circuits covering the geographic area of the United States, and one Federal Circuit for Washington, D.C.The United States Court of Appeals for the Federal Circuit hears appeals from specialized trial courts, such as the United States Court of Federal Claims, and complaints arising under the patent laws. Unlike other federal courts of appeals, it hears appeals from all district courts. Uniquely, the Federal Circuit has binding precedent for the entire U.S. within the jurisdiction of its subject matter. This is unlike other Federal Courts of Appeals which have binding precedent over a geographic region, and can result in differing interpretations of federal law (commonly known as "Circuit Splits"). This typically means that in regards to its subject matter, the Federal Circuit is typically the last word, as most of its cases will not be heard by the US Supreme Court.AnswerThe jurisdiction is different.There are thirteen United States Courts of Appeals Circuit Courts comprising the intermediate appellate step between the District Courts and the Supreme Court.The United States Court of Appeals for the Federal Circuit is the only court with nationwide jurisdiction over courts with special subject matter jurisdiction, such as appeals from:US Court of Federal ClaimsUS Court of International TradeUS Court of Veterans' ClaimsUS Trademark Trial and Appeal Boardpatent casesUS contractor disputesappeals from several departmental boards and commissionsappeals under certain Acts of Congress.The other twelve US Court of Appeals Circuit Courts have territorial jurisdiction over US District Courts located within Circuit's regional parameters. US District Courts have original (trial) jurisdiction over cases of general jurisdiction (the majority of federal civil and criminal cases) that occur within the boundaries of their district.
Under Articles I and III of the Constitution, Congresshas sole authority to create federal courts. They established the US Supreme Court (mandated by the Constitution) and first federal courts in the Judiciary Act of 1789.