First it was doctors who wouldn’t perform abortions and pharmacists who wouldn’t fill prescriptions for contraceptives.
Several years back a Chicago police officer sought an exemption from an assignment to guard an abortion clinic. And most recently, a town clerk in New York state refused to sign the marriage license of a lesbian couple who had every right to marry under the recently passed state law.
In these cases public servants claimed religious exemptions from doing a part of their job under the guise of so-called "conscience clauses". In each case, “religious freedoms” of public servants have trampled over the rights of the people they took an oath to serve.
Many of the country’s conscience clauses were established after abortion was legalized to allow the religious to abstain from administering the procedure. But the slope has gotten more and more slippery as other public servants have attempted to expand laws that were once confined to health care issues, to all spheres of public life. And the U.S. Conference of Catholic Bishops is one of the biggest proponents of expanding the coverage of “conscience clauses."
http://www.secular.org/blogs/lauren-anderson-youngblood/forcing-your-beliefs-others-not-religious-freedom