Campaign against it? While in the short term they certainly don't want to pay for a non-service, they are 100% behind the government taking away their waste problem.
There is a bunch of defense-related politics here. The US doesn't generally reprocess nuclear waste into useful things (ie new fuel). The DOE, who control nuclear weapons, like to have a huge pile of waste lying around because some of it can be reprocessed into weapons-grade material. Yucca would have been more a stockpile than disposal site. That's why more practical means of burial (deep cores) were never really discussed. They didn't want to put it somewhere out of reach.
There is a bunch of defense-related politics here. The US doesn't generally reprocess nuclear waste into useful things (ie new fuel). The DOE, who control nuclear weapons, like to have a huge pile of waste lying around because some of it can be reprocessed into weapons-grade material. Yucca would have been more a stockpile than disposal site. That's why more practical means of burial (deep cores) were never really discussed. They didn't want to put it somewhere out of reach.