Crimes are usually categorized as felonies or misdemeanors based on their nature and the maximum punishment that can be imposed. A felony involves serious misconduct that is punishable by death or by imprisonment for more than one year. Most state criminal laws subdivide felonies into different classes with varying degrees of punishment. Crimes that do not amount to felonies are misdemeanors or violations. A misdemeanor is misconduct for which the law prescribes punishment of no more than one year in prison. Lesser offenses, such as traffic and parking infractions, are often called violations and are considered a part of criminal cases.
State legislatures have the exclusive and inherent power to pass a law prohibiting and punishing any act, provided that the law does not contravene the provisions of the U.S. or state constitution. When classifying conduct as criminal, state legislatures must ensure that the classification bears some reasonable relation to the welfare and safety of society. Municipalities may make designated behavior illegal insofar as the power to do so has been delegated to them by the state legislature.A body of rules and statutes that defines conduct prohibited by the government because it threatens and harms public safety and welfare and that establishes punishment to be imposed for the commission of such acts. The term criminal law generally refers to substantive criminal cases. Substantive criminal cases define crimes and may establish punishments.
Laws passed by Congress or a state must define crimes with certainty. A citizen and the courts must have a clear understanding of a criminal law’s requirements and prohibitions. The elements of a criminal law must be stated explicitly, and the statute must embody some reasonably discoverable standards of guilt.A criminal statute does not lapse by failure of authorities to prosecute violations of it. If a statute is expressly repealed by the legislature, but some of its provisions are at the same time re-enacted, the re-enacted provisions continue in force without interruption. If a penal statute is repealed without a saving clause, which would provide that the statute continues in effect for crimes that were committed prior to its repeal, violations committed prior to its repeal cannot be prosecuted or punished after its repeal.
The punishment that is provided under a repealed statute without a saving clause cannot be enforced, nor can the proceeding be prosecuted further, even if the accused pleads guilty. A court cannot inflict punishment under a statute that no longer exists. If a relevant statute is repealed while an appeal of a conviction is pending, the conviction must be set aside if there is no saving act is purposeful when a person holds a conscious objective to engage in certain conduct or to cause a particular result. To act knowingly means to do so voluntarily and deliberately, and not owing to mistake or some other innocent reason. An act is reckless when a person knows of an unjustifiable risk and consciously disregards it. Criminal breach of trust, criminal misappropriation of money , cheating, forgery etc are the main types of economic offences for which special wings have been created by the police, CBI and other law and order enforcing agencies.