How is Denny Hastert's congressional page abuse 800-number not an obstruction of justice?

We have an FBI criminal investigation going on and Denny Hastert is asking potential witnesses to contact him first and to give him their evidence rather than the FBI. In what possible world is that not obstruction of justice, especially since Denny Hastert is one of the people being investigated for an attempted cover-up of this possible crime?

When does the FBI permit people under investigation to tamper with evidence before the FBI has even seen that evidence? That is exactly what will happen when potential witnesses call Denny Hastert's new 800 number with information about page abuse.

Who will be taking these phone calls on the 800 number? Hastert's staff? The very staff he said yesterday he was considering firing because of their involvement in this scandal?

I've spoken to a former federal official who is very concerned about the potential for obstruction of justice and tampering with witnesses. And to think that Denny Hastert has even asked the FBI to do a criminal investigation of witnesses who have failed to come forward with their evidence in this case? Then why would those same witnesses want to come forward now, and to Denny Hastert no less?

Someone needs to shut Denny Hastert down, now.