************* NEWS FLASH *************
There are no experts at the FBI who determined that there was no sexual abuse. They did NOT investigate the JonBenet Ramsey case. The FBI was called in to this case early on when it was believed/reported to be a kidnapping. They have jurisdiction in such cases because of the law passed after the Lindbergh kidnapping. Prior to that laws passage, jurisdiction over kidnappings (like any other felony) fell to local authorities. But because of the possibility of transport of the victim to another state, jurisdictional disputes could slow down an investigation where time was critically important to the safety of the victim. From Wikipedia:
Following the historic Lindbergh kidnapping (the abduction and murder of Charles Lindbergh's toddler son), the United States Congress adopted a federal kidnapping statuteknown as the Federal Kidnapping Act 18 U.S.C. § 1201(a)(1) (popularly known as the Lindbergh Law, or Little Lindbergh Law)which was intended to let federal authorities step in and pursue kidnappers once they had crossed state lines with their victim.
The theory behind the Lindbergh Law was that federal law enforcement intervention was necessary because state and local law enforcement officers could not effectively pursue kidnappers across state lines. Since federal law enforcement, such as FBI agents, have national law enforcement authority, Congress believed they could do a much more effective job of dealing with kidnappings than could state, county, and local authorities.
Once JonBenets case was confirmed to be a murder instead of a kidnapping, jurisdiction went back to the local LE authorities. The agency does
not investigate individual murder cases. They
do however collect data (from other LE entities), compile statistics on a national level, provide assistance and advice to local authorities (when requested), and they also provide training to individuals within local investigative bodies. When it is said that the FBI found no evidence of prior abuse, it is a little misleading because they did not investigate it. That
opinion was expressed (I dont know by whom at the agency) based on the information supplied to them by the local authorities (BPD and the DAs office). It was the BPD who investigated the possibility of prior instances of abuse -- probably by checking with CPS and interviewing friends, associates, and school officials. And of course there was the information that the good Dr. Beuf gave them that he had never seen any evidence of abuse in the years he had been her doctor. (I wont again go into my thoughts about him other than to point out that he is the doctor who thought he needed a speculum to see if her hymen was intact.) There was no evidence
found that JonBenet had been previously subjected to child abuse (physical or sexual). The FBI based whatever opinion they expressed on the information that was provided to them. And I dont care how Schiller worded a sentence in his book to make it seem (intentionally or unintentionally) that the FBI had actually investigated it -- they didnt. They just dont do that.
Also, while on the subject of the FBI, they were the reason for the meeting that prevented BPD from sending additional backup for Det. Arndt when she was requesting it. I cant remember where or when that was disclosed, but the SA(s) sent from the FBI was (were) going over the information (statistics) and evidence they had so far (the RN) with BPD while Arndt was left to monitor the house and any phone calls that might come in during that period of time. Add to this the fact that it was the day after Christmas and they were short-staffed with officers left to handle what they expected to be just another quiet holiday. Anyone available from LE was at the PD going over how they were going to investigate it. It goes without saying that once the body turned up, the FBI was out of the picture and the big meeting ended. That is also when (reportedly) they told the BPD as they were leaving to look closely at the parents, based on what they knew at the time.