Ma’aikatar harkokin wajen Amurka ta ce daukan wannan mataki ya samo asali ne tun bayan da aka samu wani mutum da aka taba samu da laifin yin lalata da kanana yara, wanda ya yi garkuwa tare da kashe wata yarinya ‘yar shekara bakwai mai suna Megan Kanka a jihar New Jersey a shekarar 1994.
