What has SCOTUS previously decided that may inform the debate over contraception?

In a post from today, lawyer Jonathan Turley discusses past cases that shed light on how the court may view a case brought by religious folk saying that they cannot be forced to accommodate use of contraceptives. 

In discussing Employment Division v. Smith (1990) Scalia, writing for the 6-3 majority says “the incidental effect of a generally applicable and otherwise valid provision, the First Amendment has not been offended.”

See the rest of his post for the full discussion…http://jonathanturley.org/2012/02/12/employment-division-v-smith/#more-45239

Peace