Listen to a recent episode about it from the podcast There's No Girl On The Internet.

Here's some sources too.

Sex, lies, and surveillance: Something's wrong with the war on sex trafficking: https://www.engadget.com/2019-05-31-sex-lies-and-surveillance-fosta-privacy.html

Real Men Get Their Facts Straight: https://www.villagevoice.com/real-men-get-their-facts-straight/

Ashton Kutcher Claims He Helped Cops Save Way More Sex-Trafficking Victims Than Authorities Say They've Found: https://reason.com/2017/02/15/ashton-kutcher-plays-sex-worker-savior/

The bogus claim that 300,000 U.S. children are ‘at risk’ of sexual exploitation: https://www.washingtonpost.com/news/fact-checker/wp/2015/05/28/the-bogus-claim-that-300000-u-s-children-are-at-risk-of-sexual-exploitation/

SEX TRAFFICKING Online Platforms and Federal Prosecutions : chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.gao.gov/assets/gao-21-385.pdf