Regardless of the ideology of the court majority, they very rarely directly overturn previous decisions. It's not impossible (Brown vs. Board of Education) but

Regardless of the ideology of the court majority, they very rarely directly overturn previous decisions. It's not impossible (Brown vs. Board of Education) but it isn't just a matter of getting a challenge before a liberal court. The previous decision is binding, they would have to justify why they would be going against authority equal to their own.