A congressional hearing on computerized commercial competition highlighting the CEOs of four of the biggest American tech organizations has been rescheduled for Wednesday, a House subcommittee said on Saturday.

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The CEOs of Facebook, Amazon.com, Alphabet’s Google and Apple were to have affirmed on Monday before the House Antitrust Subcommittee. However, the consultation was delayed for the lying in state at the Capitol Building of the late Representative John Lewis, a symbol of the social liberties development.

A subcommittee declaration gave on Saturday said the meeting presently would be hung on Wednesday and that witnesses and individuals could show up face to face or for all intents and purposes.

Each of the four tech organization CEOs – Jeff Bezos of Amazon, Tim Cook of Apple, Sundar Pichai of Alphabet and Mark Zuckerberg of Facebook – are to show up practically, the declaration said.

The subcommittee of the Democratic-drove House Judiciary Committee is examining whether the organizations effectively look to hurt and take out smaller opponents.

“Given the focal job these companies play in the lives of the American individuals, it is important that their CEOs are expected,” Judiciary Committee Chairman Jerrold Nadler and David Cecilline, the subcommittee director, said in a joint explanation.

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The CEOs are required to avoid analysis of their utilization of market capacity to harm rivals by saying they themselves face rivalry and by exposing claims that they are so prevailing.