Note that lying to a federal investigator, even when you don't even realize it or realize that it has any bearing on anything, is a crime (in the US). It's inadvisable to lie to the police, FBI, etc.
which is why you never talk to the police, or the Feds: http://www.youtube.com/watch?v=6wXkI4t7nuc
Can't post this often enough, because it takes a lawyer to explain that even if you're "innocent" (scare quotes, ha ha), you're in danger
