On Wednesday, Facebook CEO Mark Zuckerberg outlined steps to reform internet laws, arguing that businesses should only be exempt from liability if they follow best practices for removing harmful content from their platforms.

Zuckerberg acknowledged the calls for changes to Section 230 of the Communications Decency Act, which exempts businesses like Facebook from liability for content posted by users, in testimony prepared for a hearing before House Energy and Commerce subcommittees on Thursday.

Facebook, along with Twitter and Alphabet’s Google whose CEOs Jack Dorsey and Sundar Pichai also testify on Thursday, have been under fire from Democrats for misinformation about the coronavirus pandemic and the 2016 and 2020 presidential elections, some of it posted by foreign actors.

“We believe Congress should consider making platforms’ intermediary liability protection for certain types of unlawful content conditional on companies’ ability to meet best practices to combat the spread of this content,” he said in prepared testimony.

“Platforms should not be held liable if a particular piece of content evades its detection-that would be impractical for platforms with billions of posts per day,” he wrote.