Zuckerberg, Dorsey Tout Progress in Combating Political Misinformation

WASHINGTON—Chief executives of two big social-media platforms said their companies did better in fending off election interference in 2020, but they still took hits from all political sides at a postelection congressional hearing.

The tough tone of Tuesday’s hearing suggested that tech companies continue to face higher risks of new regulation in the next Congress that begins in January.

At…