From NBC's Pete Williams
A law enforcement official says the four men arrested for attempting to tamper with the phones in the New Orleans office of Sen. Mary Landrieu (D) were not trying to intercept or wiretap the calls.
Instead, the official says, the men, led by conservative videomaker James O'Keefe, wanted to see how her local office staff would respond if the phones were inoperative. They were apparently motivated, the official says, by criticism that when Sen. Landrieu became a big player in the health care debate, people in Louisiana were having a hard time getting through on the phones to register their views.
That is, the official says, what led the four men to pull this stunt -- to see how the local staffers would react if the phones went out. Would the staff just laugh it off, or would they express great concern that local folks couldn't get through?