A dispute between Mayor Michael Bloomberg and Governor Andrew Cuomo over who will be responsible for paying operating costs and overseeing the 9/11 Memorial Museum has delayed the museum’s opening. It’s now unlikely it will be completed by the time construction of 1 World Trade Center concludes in early 2014, reports the New York Times. Construction of the $1 billion museum was brought to a halt in June, but the disagreement dates back more than a year. There was initially hope that the museum would be complete in time for the tragedy’s 11th anniversary, but that’s not going to happen, and it might not be ready in time for next September, either. “It would be catastrophically sad if they can’t find a solution,” said Ira M. Millstein, a board member of the Sept. 11 foundation told the Times. Further complicating matters is that New Jersey Mayor Chris Christie, who along with Cuomo is in charge of the Port Authority, will have to sign off on the eventual agreement.