Toss the climate models and work on one good economic model to test the effects of taxation and regulation. That would actually be fun to play with and educational for all. Scientists would discover the sweet spot for maximizing their government funding is with lower taxes and regulation, not from socialism.
One way to neuter the EPA is to require them to provide reports on the human and economic impacts of any proposed policy, and then get approval from Congress before implementing it.
As it is, they are specifically excluded from economic impact requirements before dictating environmental policy.