Trump Legal Team, Campaign Adviser Subpoenaed By Jan. 6 Committee

Trump has been subpoenaed to testify before the House committee investigating the US Capitol insurrection. The committee claims that Trump and three others were key in promoting unsupported voter fraud theories after the 2020 election and possess crucial information for the investigation. It remains unclear if they will comply with the committee's request.

What event took place months after the 2020 election that is relevant to the investigation?

What information does the committee believe the four individuals have?