The fundamental idea of US Government is that it stays out of our private lives.
- Persons accepting public assistance can have strings tied to that assistance.
- Persons who have come under the watch of CPS, through the courts, can have restrictions placed on sleeping arrangements and such. These restrictions are commonly extrapolated out to everybody else, but that's incorrect. If you aren't under court jurisdiction, the court can't tell you what to do.
- Restrictions on housing and such couldn't be sex-based as far as I know. That's not rationally related to any problem the government would be dealing with.
The idea that kids can't share a bedroom with their siblings presupposes that all children are potential sex offenders. That's just not reasonable.