Explanation of three-strikes laws and sentencing enhancements under the Sixth Amendment.
Three-strikes laws are laws that require state courts to impose a mandatory extended sentence on a defendant who is convicted of three or more serious crimes. Whether they constitute cruel and unusual punishment under the Eighth Amendment is a subject of debate, with the Supreme Court ruling in Ewing v. California (2003) that such laws do not violate the Constitution.
Regarding sixth amendment rights to a jury trial, sentencing enhancements have been upheld constitutionally under Apprendi v. New Jersey (2000) and Blakely v. Washington (2004), requiring that any fact which increases the penalty for a crime beyond the prescribed statutory maximum be submitted to a jury and proven beyond a reasonable doubt.
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