exist among them. For example, Minnesota's Sentencing Guidelines Commission initially sought consciously not to increase prison capacity through guidelines. That is, Minnesota assumed that the legislature should determine how much would be spent on prisons and that the sentencing commission's job was to allocate those prison beds in as rational a way as possible. The federal effort took the opposite approach. It determined how many prisons would be needed and Congress was then essentially required to fund those beds. Promulgation and modification In drafting the first set of guidelines, the Commission used data drawn from 10,000 presentence investigations, the differing elements of various crimes as distinguished in substantive criminal statutes, the United States Parole Commission's guidelines and statistics, and data from other sources in order to determine which distinctions were important in pre-guidelines practice. Sentencing criteria already in use by judges was thus codified as guidelines. The Commission essentially codified existing practice. Future modifications often reflected Congressional mandates, as in the case of the Anti-Drug Abuse Act of 1986 that imposed increased and mandatory minimum sentences. In 2003, Congress considered the Feeney Amendment to the PROTECT Act. This amendment would have totally rewritten the guidelines. Among other changes, the original amendment would have eliminated all unenumerated downward departures and all downward departures for family ties, diminished capacity, aberrant behavior, educational or vocational skills, mental or emotional conditions, employment record, good works, or overstated criminal history. Defense lawyers, law professors, current and former Sentencing Commissioners, the President of the American Bar Association, Chief Justice William Rehnquist, and others wrote to Congress opposing the amendment. The enacted bill limited the changes described above to crimes involving pornography, sexual abuse, child sex, and child kidnapping and trafficking. It also raised penalties for child pornography and child sex abuse. It also greatly increased prosecutorial discretion and influence by limiting judges' power to depart from the guidelines and granting prosecutors greater power over departures. For instance, it made a prosecutorial motion a prerequisite for a three-level reduction for acceptance of responsibility. It also instructed the Sentencing Commission to authorize four-level "fast-track" downward departures in illegal-reentry immigration cases upon motion of the prosecutor. United States v. Booker Though the Federal Sentencing Guidelines were styled as mandatory, the Supreme Court's 2005 decision in United States v. Booker found that the Guidelines, as originally constituted, violated the Sixth Amendment right to trial by jury, and the remedy chosen