Facebook CEO Mark Zuckerberg Mark Elliot Zuckerberg2.5 million US users register to vote using Facebook, Instagram, Messenger Hillicon Valley: Trump's ban on TikTok, WeChat in spotlight | NASA targeted by foreign hackers | Instagram accused of spying in lawsuit The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Trump contradicts CDC director on vaccine, masks MORE on Tuesday kicked off his inaugural appearance before lawmakers on Capitol Hill by apologizing for his company’s recent missteps.

“It’s clear now that we didn’t do enough to prevent these tools from being used for harm," Zuckerberg said at a joint hearing of the Senate Judiciary and Commerce committees.

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"That goes for fake news, foreign interference in elections, and hate speech, as well as developers and data privacy. We didn’t take a broad enough view of our responsibility, and that was a big mistake,” he continued.

“It was my mistake, and I’m sorry. I started Facebook, I run it, and I’m responsible for what happens here."

Zuckerberg spent the rest of his opening remarks detailing previously released details about the Cambridge Analytica scandal, including steps his company is taking to protect consumer data.

The Facebook CEO is facing a grilling from lawmakers over the Cambridge Analytica scandal, in which the British research firm hired by the Trump campaign improperly obtained data from 87 million Facebook users.

Lawmakers' takeaways from the hearing could affect Congress’s appetite for new data privacy regulations that could impact Facebook and other websites and applications.