A more thorough explanation:

The United States Sentencing Guidelines, also known as federal sentencing guidelines, are a set of detailed instructions that judges use to determine appropriate sentences for federal crimes.

For example, if someone is convicted of a federal crime such as drug trafficking, the judge will consult the United States Sentencing Guidelines to determine the appropriate sentence based on factors such as the severity of the crime, the defendant's criminal history, and any other relevant circumstances.

The purpose of the United States Sentencing Guidelines is to promote consistency and fairness in federal sentencing. By providing clear guidelines for judges to follow, the guidelines aim to ensure that similar crimes are punished similarly, regardless of which judge is presiding over the case.