For the past year, work on the National September 11th Museum at the former World Trade Center site has all but stalled because of a stalemate between the Port Authority and the nonprofit foundation that raised the money for the project, which has ended up costing more than expected. The foundation, headed by Mayor Bloomberg, has raised more than $435 million in private donations, but the Port Authority—which is controlled by the Governors Cuomo and Christie—claims the foundation owes the agency $157 million more. Today relatives of 9/11 victims blasted the governors for what they call a "betrayal” to their loved ones’ legacy.

Signed by more than 200 family members, the letter urges the two governors restart construction and “finish the job... The Port Authority's conduct is a betrayal of those who died on 9/11. It is a betrayal of the thousands who risked everything to honor them, and it is a betrayal of the growing number of children for whom '9/11' is not a first-hand memory." The museum was supposed to open in September, but that's no longer expected to happen, and the Daily News reports that the cost of the memorial and museum could spiral as high as $1.46 billion. (The initial projection was $680 million.)

Cuomo says the funding gap is somewhere in the neighborhood of $300 million, and both he and Christie are calling on the federal government to help fund the project. At a press conference today, Mayor Bloomberg empathized with the families' frustration, telling reporters, "The Port Authority has to get going here. Let's stop the shilly-shallying and just do it."