Investigators say electrical appliances, electrical systems or any mechanical or structural failures in the building were not the cause of the fire.
Representative David Niezgodski is pushing the legislature to respond to the tragedy during its next session before the investigation ends.
The GOP is calling for an investigation to the claim that signatures on Obama and Clinton's 2008 petitions for presidency may have been forged.
The investigation of the collapse continues, but the wreckage is being removed from the Indiana State Fair grounds.
A Statehouse tour group reported difficulty breathing Thursday morning. The three taken to the hospital are reportedly in stable condition.
The engineering company the commission has hired to conduct the on-site accident investigation, is seeking photos and video of the stage.
State Fair Spokesman Andy Klotz said policies and procedures are also under scrutiny.
According to BPD, there are no updates regarding the ongoing effort at the landfill.
The Indiana State Fair Commission has hired a New York-based engineering firm to oversee the investigation into the deadly structure collapse last Saturday.
The charges against the owner could result in a ten-year prison term and a fine of as much as $250,000.