Wait I always took it as zoos and aquariums were too afraid to enter the program was it that or was there active pushback from the AR lobby?
Zoos and aquariums were never going to take in Vaquitas, afaik the plan was for a private breeding center within Mexico that focused on breeding them. I don't think animals were ever planned to be brought into the United States nor do I know of any American collections that ever had direct involvement in the attempted establishment of a breeding center. It was AR pushback that delayed the project from ever going forward until it was far too late.
~Thylo