Source: H.R. 3233 and H.Res. 503
Bill summary:The select committee must (1) conduct an investigation of the relevant facts and circumstances relating to the attack on the Capitol; (2) identify, review, and evaluate the causes of and the lessons learned from this attack; and (3) submit a report containing findings, conclusions, and recommendations to prevent future acts of violence, domestic terrorism, and domestic violent extremism, and to improve the security of the U.S. Capitol Complex and other American democratic institutions.
CBS News summary, by Grace Segers on June 30, 2021:H.R. 3233 would have created a bipartisan, independent commission to investigate the root causes of the breach of the U.S. Capitol, modeled after the 9/11 Commission.
On May 28, the House passed the bill by a vote of 222 to 190, including 35 Republican votes. It then failed in the Senate, where it received an insufficient number of Republican votes to advance.
In response, House Speaker Nancy Pelosi announced on June 24 that the House would establish a select committee [appointed by House Democrats, instead of a bipartisan independent commission] to investigate the Jan. 6 insurrection and general security issues related to the incident. Pelosi said its leadership and members would be announced later. The House passed the resolution to form the committee on June 29, 2021, by a vote of 222-190.
OnTheIssues note: The Senate voting record refers to the earlier rejected bill H.R. 3233, and the House voting record refers to the later bill H.Res.503. The later bill had no Senate vote (but the two House votes were almost identical).