The "Bathroom bill" concept, using toilet of birth gender actually endangers women because it allows people who look male to enter women's toilets. Sixteen-year-old Gavin Grimm (VA) and fifteen-year-old Alex Pettigrew (TX) look and act just like any teenage boy, but biologically they are females. What was happening in their schools is transgender females had to go to the girls bathroom because they where females, but because they looked like and acted like boys it alarmed the female girls. The school allowed the transgender females to use the boys restroom. BY enacting these laws the boy looking transgender females (boy/female) would once again have to use the girls restroom (and changing rooms) once again alarming girls who think a man/male is entering the area (maybe calling the police who will simply tell the frightened girls that "guy" can use the girls restroom) The flip side is transgender males who look very much like girls have to use the boy restroom will be assaulted because the boys may think they are girls looking for sex (at worse), or gain wrong impression about girls/females in general. (OH, and a real predator could enter a girls bathroom dressed a man and claim being transgender female, and attack a girl who accepts his lie!) Ironically, the Roman Empire lasted 1000 years (give or take), and they did not have segregated bathrooms. In fact, segregated bathrooms is about 150 years old, so the idea of needing segregated toilets is like saying we need "Colored toilets".