In Washington, DC years ago, there was a bill before the DC Council that basically said that any man having sex with a woman who ended up with a child was presu

In Washington, DC years ago, there was a bill before the DC Council that basically said that any man having sex with a woman who ended up with a child was presumed to be the biological father until paternity was ruled out. So if a woman had sex with several men, all would have presumed paternity. I don't recall whether this applied only to public benefits and paternity.