Sure, there *could* have been some entrapment. Sure, who keeps 5 year old IM conversations? On the other hand, who the heck keeps jizz-stained dresses?
Using this logic, Rasheeda Moore was a GOP plant (the girl with whom Hizzonor Marion Berry was smoking crack with) and so was Monica Lewinsky.
Monica and the other IM party are examples of sexual temptation that powerful politicians are unable/unwilling to resist. On one side, Monica was an adult, but on the other side, Clinton did lie to America on national TV.
If all Hastert and other GOP leaders knew were the emails and it is established then the damage might be isolated to the FL-1 compartment, much as the Abramoff damage seems to be localized instead of generalized.
Otherwise, the GOP is taking a hit below the waterline and taking on water fast.
I haven't suggested entrapment. Foley clearly seems to have a pattern of bad behavior. He got into it on his own - no help needed. I'm simply suggesting that the way the story is being slowly doled out suggests it could be part of a campaign calculated to inflict maximum damage on the GOP.