You Vote: Why is there a lack of transparency on the attempted assassination of Trump last year?

Republican Wisconsin Sen. Ron Johnson approved a subpoena to be sent to the Justice Department (DOJ) and FBI regarding more information on the first assassination attempt against President Donald Trump in Butler, Pennsylvania last year. 

The subpoenas will be sent near the anniversary of the shooting, which occurred on July 13. Johnson was part of the Senate's Homeland Security investigation into the assassination attempt last year, but now leads a separate investigation as chairman of the Permanent Subcommittee on Investigations.

Johnson told Fox News on Thursday that he approved a subpoena on Wednesday to get more information from the two agencies, but has described the investigative process overall as "maddening," because of the red tape he's experienced so far. Johnson claimed his investigation is still being "stonewalled"

"I'd like our report to be bipartisan, but everybody else seems to have been moving on here and not particularly interested in an investigation. I am," Johnson said. "Whether I have the other officers involved or not, I'm moving forward, which is why I approved a subpoena."