Block booking is an illegal tactic in which studios force theaters to make room for weak movies in order to obtain the rights to show potential blockbusters.
The regulations also bar federal agencies from assessing emissions of the gases blamed for global warming on species and habitats, a tactic environmentalists have tried to use to block new coal-fired power plants.
In May 2012, MS objected to that application arguing that the court should block Mensack from moving forward with the latest lawsuit, a tactic which worked for a few months.