"... A senior federal law enforcement source tells ABC News that investigators are interested in learning if Jefferson moved any materials relevant to the investigation. Jefferson says he did not."
Yeah, just like he says he was only visiting his Parish to see if any of his constituents needed any help and he just HAPPENED to be in the neighborhood... (sarcasm intended!!!)
"Last month FBI officials raided Jefferson's house..."
Maybe Jefferson was using the Nat Guard to remove any remaining evidence.
Explains why he would not evac on the chopper and the truck got stuck, loaded down with evidence no doubt.
A light dawns -- he was probably desperate to get to the place before the Feds did....