The Supreme Court held that, as originally written, the Federal Sentencing Guidelines required judges to impose enhanced sentences based on judicial fact-finding that exceeded the statutory maximum supported by a jury verdict in violation of the criminal defendant's Sixth Amendment rights. The Supreme Court applied a remedy that made the Federal Sentencing Guidelines advisory rather than mandatory.
United States v. Booker, 125 S. Ct. 738 (2005).
Hollyce L. Winters,
Preventing the Erosion of Sixth Amendment Protections: Defining the Jury's Role under the Federal Sentencing Guidelines: United States v. Booker,
Duq. L. Rev.
Available at: https://dsc.duq.edu/dlr/vol44/iss1/11