According to the U. S. Department of Justice Bureau of Justice Statistics, in the 1,209 federal child pornography cases concluded in 2006, 95.1% of defendants were convicted. Bureau of Justice Statistics Bulletin, Federal Prosecution of Child Sex Exploitation Offenders, 2006, p. 6 (Dec. 2007), online at
http://www.ojp.usdoj.gov/bjs/pub/pdf/fpcseo06.pdf (as visited May 8, 2008, and available in Clerk of Court’s ease file). By comparison, of the 161 child pornography cases concluded in 1996, 96.9% of *326defendants were convicted.
Ibid. Of the 2006 cases, 92.2% ended with a plea.
Ibid. The 4.9% of defendants not convicted in 2006 was made up of 4.5% whose charges were dismissed, and only 0.4% who were not convicted at trial.
Ibid. Nor do the statistics suggest a crisis in the ability to prosecute. In 2,376 child pornography matters concluded by U. S. Attorneys in 2006, 58.5% of them were prosecuted, while 37.8% were declined for prosecution, and 3.7% were disposed by a U. S. magistrate judge.
Id., at 2. By comparison, the prosecution rate for all matters concluded by U. S. Attorneys in 2006 was 59%.
Ibid. Nor did weak evidence make up a disproportionate part of declined prosecutions. Of the child pornography cases declined for prosecution, 24.3% presented problems of weak or inadmissible evidence; 22.7% were declined for lack of evidence of criminal intent; and in 18.7% the suspects were prosecuted on other charges.
Id., at 3. In comparison, weak or inadmissible evidence accounted for 53% of declined prosecutions for sex abuse and 20.4% for sex transportation, both sexual exploitation crimes which do not easily admit of a virtual-child defense.
Ibid. None of these data, to be sure, isolates the experience between
Free Speech Coalition and the current Act, or breaks down the post-Act numbers by reference to prosecution under the Act. If the generality of the *327statistics is a problem, however, it is for the Government, which makes the necessity claim.