Faith, freedom and repealing the ‘bathroom bill’

Several months back I received a phone call out of the blue late one afternoon from a youth pastor at a Boston area church. He had questions about transgenderism and discrimination laws. Specifically, he was planning an overnight youth retreat for his church and was concerned because two of the teens who were interested in coming were girls who "identified" as boys. Since the setting for the retreat was a Christian camp with group cabins, privacy was going to be an issue. The two young women would likely complain of being "mis-gendered" if they were lodged in the girls' cabin, and might claim discrimination if offered separate sleeping spaces.
It goes without saying that biological teenage girls should not be sleeping and showering in the same cabin as teenage boys. At least, it did until now. Although this conundrum was, at its heart, a complex pastoral question, the pastor called me to figure out a solution that would not get him or his church in trouble with the law.