facing fiery questions from congress. you re parents. how can you allow this? reporter: those executives from platforms hugely popular with young teens defending their practices, along with youtube, arguing they protect kids and trying to separate themselves from facebook. tiktok is not a social network based on followers. snapchat was a decidedly different platform where people could come and talk to the friends they have in real life. we do not support features such as comments or live chat. reporter: lawmakers looking for more. being different from facebook is not a defense. that bar is in the gutter. reporter: congress could put in place stricter privacy laws and other protections for kids and teens. for example, banning like buttons and auto-play. requiring platforms have a way to flag harmful content and preventing websites from promoting influencer ads to teens. we re open to getting feed pak from outside experts, policymakers, parents, about way