So was O.J.
Exoneration of the McCann's is not a rational measure of a technology that is used all over the world by law enforcement to good effect. BTW, I am not defending LVA...just offering a link to anyone who might want to look into it.
You seem to have a lot of emotion invested in this issue. Is that due to your opposition to Cain?
OJ was investigated by the police and as a result, he was indicted and put on trial for murder...
The McCanns were investigated by the police and EXONERATED by the same police who investigated them.