In The Wall Street Journal, Laura Meckler reports that gay-rights advocates are encountering complications in crafting a bill that would bar discrimination based on sexual orientation and gender identity. “There is disagreement about how to balance religious tenets against the proposed new antidiscrimination rules, while some African-American leaders worry that amending the 1964 Civil Rights Act, as envisioned by the legislation, could invite unwelcome changes to what they see as a sacred text,” Meckler writes.