Another reason why Obamacare might be unconstitutional?

The first part of the first Amendment states "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof;" I am no lawyer but when I hear that Obamacare is forcing Catholic instituions to provide conterceptive and abortion through their health insurance and forcing Catholic hospitals to provide abortion serivices, does that not prohibit their free exercise of their religion? Let's add that to the argument when Obamacare come before SCOTUS so we can get rid of this monstrosity.