And Presbyterian NeverTrumper David French here in National Review defends him:
At the same time, the ERLC was working diligently to try to bridge persistent racial divisions in the SBC and the Evangelical church more broadly and to persuade the public that religious liberty wasn’t just a Christian concern, but a deeply American value. Towards that end, it controversially (to some) signed on to an amicus brief defending the religious liberty of Muslims seeking to build a mosque in New Jersey. (To criticize this decision is particularly odd given the ERLC’s explicit mission to preserve religious liberty. The same legal standards that apply to mosques will also apply to churches.)