On Tuesday, Quakers and (some) other Christian groups opposed to H.R. 4437 will join with immigrant rights advocates to protest the pending bill which, if passed, will criminalize any assistance given to illegal immigrants and will also facilitate the building of a 700-mile fence between the U.S. and Mexico. But the bill, which Catholic leaders recently condemned as antithetical to the Bible, has failed to motivate some of the most prominent conservative Christians, who rebuffed requests from fellow-evangelical immigration rights groups to become involved by saying that they were focusing their attention on other issues, such as same-sex marriage, and that they had political concerns about becoming involved in an issue dominated by liberal rhetoric.