IS IT A CONSTITUTIONAL ERROR THAT CONFLICTS WITH UNITED STATES SUPREME COURT HOLDINGS WHERE STATE COURTS FOUND A MANDATORY MINIMUM SENTENCING STATUTE UNCONSTITUTIONAL BUT DID NOT DECLARE THE DECISION RETROACTIVELY APPLICABLE TO CASES ON COLLATERAL REVIEW AS IS REQUIRED OF NEW SUBSTANTIVE RULES OF CONSTITUTIONAL LAW?

Whether the state courts erred in not declaring the unconstitutional mandatory minimum sentencing statute retroactively applicable to cases on collateral review