Police in Michigan cannot be prosecuted if they have sex with a prostitute during an investigation.

The old law means it's possible for investigators to have sex with human trafficking victims in the commercial sex industry without facing punishment according to U of M's Human Trafficking Clinic director Bridgette Carr.

She says when the law was written, it gave law enforcement all the power they needed to investigate prostitution, but no one thought to go back and carve out a prohibition against sexual intercourse.

Carr is working with legislators to get the law changed.