furious trying to determine who's responsible. should they be punished, how high does this go? well, the state investigation could pose a conflict with those investigations, and it is likely some witnesses will fight their subpoenas. some in arizona welcome the battle. >> i'm asking you, attorney general eric holder, to resign now before you're forced out. >> we're giving guns to other countries, we're just spreading our own nonsense? really? >> reporter: now, a legal expert told me this morning that the state could see fast and furious as a conspiracy between the atf and straw buyers or aiding and abetting the cartels by certain u.s. attorneys. their defense, federal officials, will be the federal statute, jon, that generally protects federal employees from state criminal prosecution if they're acting in their official capacity. the bottom line, it's unclear if these hearings will result in a prosecution, but the testimony is likely to be informative and potentially damaging to the