Big Tech faces off with congressional critics during antitrust House hearing

Tech industry titans are expected to clash with House lawmakers Wednesday during a historic, highly anticipated hearing on monopolies and misinformation.

Amazon CEO Jeff Bezos, Apple CEO Tim Cook, Facebook CEO Mark Zuckerberg, and Google CEO Sundar Pichai will testify together for the first time before a House Judiciary subcommittee that's spent the past year investigating how the online platforms dominate their markets, sometimes to the detriment of competition and innovation.

Washington Democratic Rep. Pramila Jayapal, a member of the panel, foreshadowed how the Big Tech appearances would likely lead to "significant changes" to U.S. antitrust law.

"We can't leave it to these companies to self-police. That's not going to happen," Jayapal told CNN Wednesday morning. "We need to protect mom and pop businesses and, you know, choice essentially for consumers."