Leaders of many faiths — including Jews, Mainline Protestants, Muslims and others — have spoken out consistently against the president’s immigration policies. What has changed is that now the objections are coming from faith groups that have been generally friendly to Mr. Trump.

A coalition of evangelical groups, including the National Association of Evangelicals and the Council for Christian Colleges and Universities, sent a letter to President Trump on June 1 pleading with him to protect the unity of families and not to close off all avenues to asylum for immigrants and refugees fleeing danger.

The Southern Baptist Convention, a conservative evangelical denomination that is the nation’s largest Protestant church, passed a resolution on Tuesday at its meeting in Dallas calling for immigration reform that maintains “the priority of family unity.” The measure called for both securing the nation’s borders, and providing a pathway to legal status for undocumented immigrants living in the country. It passed on a near unanimous vote of the thousands of delegates in the room.