Honolulu police officers have urged lawmakers to keep an exemption in state law that allows undercover officers to have sex with prostitutes during investigations, inciting a heated debate over the provision, The Associated Press reports. Authorities say they need the legal protection to catch lawbreakers. Critics, including human trafficking experts and other police, say it's unnecessary and can further victimize sex workers, many of whom have been forced into the trade. It's not immediately clear how often — or even if — Honolulu police have sex with prostitutes, and authorities assure legislators that internal policies and procedures are in place to prevent that scenario. The Hawaii bill that sparked the debate goes before a Senate committee Friday.