Pay for the construction or pay for the required additional construction costs for "security"? Looks to me like that "public money" was to pay for some serious "building code requirements". Not exactly a gift to the church for them to rebuild with.
http://www.nytimes.com/2009/03/19/ny...urch.html?_r=1
.....
"Last July, the Port Authority and the Greek Orthodox Church announced a tentative plan to rebuild the church just east of its original site, at Liberty and Greenwich Streets. The authority agreed to provide the church with land for a 24,000-square-foot house of worship, far larger than the original, and $20 million. Since the church would be built in a park over the bomb-screening center, the authority also agreed to pay up to $40 million for a blast-proof platform and foundation.
In recent negotiations, the authority cut the size of the church slightly and told church officials that its dome could not rise higher than the trade center memorial. The church, in turn, wanted the right to review plans for both the garage with the bomb-screening center and the park, something the authority was unwilling to provide. More important, authority officials said, the church wanted the $20 million up front, rather than in stages. Officials said they feared that the church, which has raised about $2 million for its new building, would come back to the authority for more.
The termination of negotiations is a major setback for the little church, a parish of 70 families that is nearly 90 years old. St. Nicholas officials had hoped to build an impressive structure, with a traditional Greek Orthodox dome, and a nondenominational center for visitors to ground zero. That will not be possible on the church’s original 1,200-square-foot lot, although church officials say they hope for reconciliation....."
And for the Mosque, what is the source of the "private funding"? Has that ever been fully investigated and vetted? Do they have the same "security requirements" to build?