If President Obama heeds The Post’s advice to issue an executive order barring federal contractors from discriminating on the basis of sexual orientation [“A fairer workplace,” editorial, April 19], he should be careful to protect the liberties of religious organizations that receive federal contracts or grants but might object to homosexuality.

The president should do this by including in an executive order the strong exemption for religious employers contained in the stalled Employment Non-Discrimination Act (ENDA) that the order would supplant.

In Congress, the exemption is supported by ENDA’s Democratic sponsors. It is also backed by the coalition of groups advocating for ENDA’s passage. It must be included in any executive order, lest we replay the debates over government mandates and religious liberty of a few months ago.

Nathan Diament, Washington

The writer is executive director for public policy of the Union of Orthodox Jewish Congregations of America.