Cost town in Washington, Facebook CEO Mark Elliot Zuckerberg feeling the heat as he grilled by the members of US Senate talking to Congress and millions of American who are on Facebook. The US Senate members asked several questions about the personal information getting into the wrong hand to Facebook CEO.

In battled Facebook CEO Mark Zuckerberg entered a packed hearing room stepping into the congressional hot seat for the first time. The 33-year-old who invited billions to trust him with their personal information on his social network began with an apology.

Mark Zuckerberg said, “We didn’t take a broad enough view of our responsibility and that was a big mistake. I was my mistake and I am sorry.” But the US senators weren’t satisfied.

After more than a decade of promises to do better how is today’s apology is different? One of the US senators asked the Facebook CEO. Zuckerberg replied, “We have made a lot of mistakes in running the company.”

Zuckerberg was grilled about why Cambridge Analytica, the political consulting firm hired by the 2016 trump campaign was able to improperly harvest the personal information of 87 million Facebook users.

US Senator Amy Klobuchar said, “Were these people concentrated in the certain stage, are you able to figure out where they are from?” Zuckerberg replied, “I do not have that information with me, but we can follow up.” Again, and again Facebook CEO was pressed over whether Facebook protects its users’ privacy.

On Russian interference in the election, Mark admits they were slow to respond. Nearly 146 million users were exposed to ads planted by Russian groups. He also signaled he is willing to work with lawmakers pushing for more robust regulations like those in Europe.

Recently, the information of the source stated that Facebook promised to send millions of users in the US alerts revealing whether their own personal information has been obtained by Cambridge Analytica and those updates have started to trickle into some people’s feed, but the full rollout still is not complete.

The overarching response from lawmakers is that the Facebook CEO cannot regulate himself and the Congress has done more to step in.