Conscience clause would be discriminatory

Your headline, ‘Religions unite against referendum’ (April 15), is contradicted by the coalition of faiths for ‘Yes’ to marriage equality as represented at a conference in Trinity College Dublin. 

The speakers at ‘The Religious Case for Yes’ included Protestant and Catholic theologians and a rabbi. The conservative Christian and Muslim groups who are seeking a conscience clause should be careful of what they wish for.

Why not extend the clause to a hotel owner, a printer, a caterer who is unwilling to endorse a mixed-faith marriage?