The Facebook boss has been grilled by US lawmakers six times in over two years.

Yet politicians have failed to pass any new rules on privacy content, moderation or antitrust.

The ineffective hearings cut into Congress's credibility.

Zuckerberg's latest turn in the D.

C spotlight this week didn't unearth new revelations.

He repeated his usual defense of the 2012 acquisition of Instagram and asserted that Facebook is in a publisher, a position he's pushed in the past.

He avoids drama partly through his matter of fact tone, which he's perfected over several congressional appearances.

Yet Congress has a host of reasons to rain Facebook in.

In addition to antitrust concerns, content moderation became front and center in the 2020 elections.

Lawmakers have proposed a stream of bills addressing these issues along with privacy, yet none have even come up for a vote.