Can Shrub be indicted?

[deadmessengers]

Like most of us here at DU, I believe that Shrub's ordering of illegal wiretaps rises to the level of an impeachable offense. I also believe that impeachment simply will not happen as long as the Repugnicans hold both houses of Congress. Here's my question:

Can Shrub be indicted for this? Basically, if a crime was committed, and it's pretty clear to me that one has been committed, does Shrub, in his capacity as President, possess some sort of immunity from prosecution as long as he holds office? Can a federal prosecutor begin an investigation, take his case to a federal grand jury, and indict Shrub, Crachcart, or any of the others in the neocon death cult for their conspiracy to violate the civil rights of Americans?

Am I missing something here? Is this an option, or is a Congressional impeachment action our only option for redress here?