From Congress.gov, here's the summary of the legislation:
National Commission to Investigate the January 6 Attack on the United States Capitol Complex Act
This bill establishes in the legislative branch the National Commission to Investigate the January 6 Attack on the United States Capitol Complex.
The commission 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 specified reports containing findings, conclusions, and recommendations to improve the detection, prevention, preparedness for, and response to targeted violence and domestic terrorism and improve the security posture of the U.S. Capitol Complex.
The bill gives the commission specified powers, including the authority to hold hearings, receive evidence, and issue subpoenas. The bill also provides for the composition of the commission and the appointment of staff, and it requires the commission to hold public hearings and meetings to the extent that it is appropriate. The commission must also release public versions of its reports.
Rep Reschenthaler, along with 174 other Trump-enablers (all Republican, BTW) voted against this.
This is what he voted against. A commission set up:
To investigate and report upon the facts and causes relating to the January 6, 2021, domestic terrorist attack upon the United States Capitol Complex (hereafter referred to as the “domestic terrorist attack on the Capitol”) and relating to the interference with the peaceful transfer of power, including facts and causes relating to the preparedness and response of the United States Capitol Police and other Federal, State, and local law enforcement in the National Capitol Region and other instrumentality of government, as well as the influencing factors that fomented such attack on American representative democracy while engaged in a constitutional process.
The current talking point coming out of the pro-Trump camp is that this commission would be biased in favor of the Democrats. But take a look at how it is to be composed:
(1) one member shall be appointed jointly by the Speaker of the House of Representatives and the majority leader of the Senate to serve as Chairperson of the Commission;
(2) one member shall be appointed jointly by the minority leader of the House of Representatives and the minority leader of the Senate to serve as Vice Chairperson of the Commission;
(3) two members shall be appointed by the Speaker of the House of Representatives;
(4) two members shall be appointed by the minority leader of the House of Representatives;
(5) two members shall be appointed by the majority leader of the Senate; and
(6) two members shall be appointed by the minority leader of the Senate.
See that? Split evenly. Not biased. Balanced.
And the subpoena power? That's balanced, too. Take a look:
IN GENERAL.—The Commission may issue subpoenas requiring the attendance and testimony of witnesses and the production of any evidence relating to any matter which the Commission is empowered to investigate under this Act. Such subpoenas shall be issued by agreement between the Chairperson and Vice Chairperson of the Commission, or by the vote of a majority of the members of the Commission. The attendance of witnesses and the production of evidence may be required from any place within the United States at any designated place of hearing within the United States. [Emphasis added.]
This is what Rep Guy Reschenthaler voted against.