I would add that the reason the Religious Right is now more often taking refuge in the religious freedom statutes, as a strategy for advancing their agenda, is because they have failed to make compelling arguments in the Public Square and, resultingly, have thus failed, too, in their legislative & judicial strategies. 

The Biblical fundamentalists lack arguments transparent to human reason. The natural law fundamentalists lack the more robust relationality-responsibility model of an authentic personalism. Both lack noncoercive inculturational & pastoral strategies. Neither recognize the rights that flow from moral probabilism, rights gifted by one's humanity & not by various magisteria.

So, ecclesiastically, they overzealouly use church canons, while, in the public square, they disingenuously invoke religious freedom, in their cynical attempts to deny others (e.g. LGBTQ) their rights to both the Church's sacraments as well as the secular order's implicit sacramentals.