Sounds like they're looking to see if Port Authority exec director Bill Baroni's testimony before the state assembly committee was coordinated (and possibly untruthful). I'll bet they find something:
A newly issued subpoena in the ongoing George Washington Bridge investigation seeks information related to a former Port Authority official's November testimony before the committee investigating the controversy, an attorney for one of the subpoenaed groups confirmed Tuesday.
The subpoena, issued yesterday by the joint legislative committee, seeks any drafts of former Port Authority Deputy Executive Director Bill Baroni's November testimony, any edits to it, or correspondence with Baroni prior to the appearance, attorney Mark Sheridan confirmed Tuesday. Sheridan represents Gov. Chris Christie's reelection campaign, which has been subpoenaed by both the committee and the U.S. Attorney.
Baroni appeared before the committee on November 25, telling members during his testimony that the lane diversions ordered by the agency during the second week of September were done in order to study the effect on traffic at the bridge if two of three local lanes were diverted for highway use.
Baroni was not under oath at the time, and email traffic that surfaced after his testimony showed no evidence of a study but instead suggest the diversions were politically motivated. Democrats have said Baroni was not truthful with the committee and are seeking to determine who helped him prepare his testimony.
MSNBC host Rachel Maddow first reported the request for information about Baroni's testimony and citing a source close to the investigation said all 18 subpoenas issued yesterday seek the same information.
The subpoena issued to the campaign also seeks any correspondence between the campaign and Fort Lee Mayor Mark Sokolich going back to April of last year, Sheridan confirmed.
It's not clear why the committee is seeking correspondence with Sokolich, however the mayor has speculated that the lane diversions were punishment for his refusal to endorse Christie in his bid for reelection. Christie has denied that Sokolich was on the campaign's radar and said he was never told the endorsement was being sought.
Sokolich has said he was courted for an endorsement by former Christie campaign staffer Matt Mowers.