Mark Zuckerberg’s prepared testimony for Wednesday’s congressional hearing has been posted online. The seven-page statement starts with an apology from Zuckerberg, who says Facebook failed to take a broad enough view of its responsibilities. “That was a big mistake. It was my mistake, and I’m sorry,” he says. “I started Facebook, I run it, and I’m responsible for what happens here.”

Zuckerberg will be testifying before the US House of Representatives Committee on Energy and Commerce on Wednesday after he faces another hearing in the Senate on Tuesday. This testimony covers a lot of familiar ground, including the Cambridge Analytica scandal and the Russia-linked Internet Research Agency’s misinformation campaign. As Josh Constine at TechCrunch points out, it does offer some new information about the Russia-linked APT28 hacking group. Facebook says it detected and shut down accounts related to APT28 over the summer of 2016.

The real meat of Wednesday’s hearing will come from Zuckerberg answering lawmakers’ questions about privacy, election interference, and Facebook’s future. But this testimony will set the stage for that showdown.