It's time to regulate tech firms, says Facebook chief

Facebook CEO Mark Zuckerberg says he believes it's time to impose more regulations on technology companies as they play an increasingly important role in the world. But he isn't spelling what kind of rules he would support beyond requiring clear disclosure about who is paying for online ads.

Zuckerberg told CNN in an interview that it no longer is a question whether Facebook and other large tech companies should be more closely regulated. Instead, he says lawmakers need to work with companies to figure out what regulations make the most sense.

The pressure to impose more controls on influential tech companies such as Facebook, Google and Amazon has been building as their services and products become more dominant, making it more difficult for rivals to build alternatives.

Zuckerberg only said he thinks it's a good idea to require internet companies to disclose who is paying for online ads. That's a proposal under review in Congress after Facebook acknowledged Russian agents financed political ads during the 2016 presidential campaign, information about which wasn't disclosed until after the election.