The number of women in state prisons has risen by 834% over the past 40 years.
Women are the fastest growing group among the incarcerated population in the US.
Prostitution is illegal in every US state apart from a few counties in Nevada.
A National Survivors Network survey found 91% of trafficking victims were under the control of a pimp when arrested.
37% of sex trafficking victims calling a national helpline in 2017 said they were trafficked by their partners.