The last time Congress passed a law to protect children on the internet was in 1998 - before Facebook, before the iPhone.

For not the first time this week, parents who have lost children to harm from social media sat in the front row of a congressional hearing.

After ten hours of testimony across two days, Facebook CEO Mark Zuckerberg left Capitol Hill Republicans unsatisfied this week with his denials of allegations that the social media platform censors conservative content, but legal experts say there may be l...