Seek the provisions of the federal criminal law of the United States

Although American criminal law originated from English common law, it is more inclined to stipulate crime and punishment through legislation. In addition to modern American federal and state criminal legislation, the United States used to follow the classification of crimes in British common law. At present, federal and state criminal codes generally divide crimes into two categories: felony and misdemeanor, and some of them are also divided into misdemeanor and police violation according to the model criminal code. The United States not only classifies crimes according to "equality", but also classifies crimes according to "equality", and the division among States is not uniform. The United States accepts the concept of criminal intent. Modern anglo-American criminal law only considers the purpose of the crime, not the motive. But different crimes have different requirements for criminal intent. Penalties in the United States include death penalty, imprisonment, probation, mixed punishment of imprisonment and probation, compensation for losses, public service and fines. The death penalty in the United States was abolished in some states from the middle of19th century, and more states abolished the death penalty in the 20th century. But later, some States resumed the death penalty. The Federal Supreme Court considers it absolutely necessary to retain the death penalty. States in the United States have different regulations on the execution of the death penalty, such as electric chair, gas chamber, injection, hanging, shooting and so on.