Grassley noted that after he sent his letter in December, “even this senator got silence from the FBI. Investigations into the use of deadly force should be handled in a manner that reinforces accountability and public confidence in law enforcement. The FBI’s silence treatment is concerning. The Ghaisar family, Congress, this senator and the public shouldn’t have to wait years to get an answer from the FBI.”

An FBI spokeswoman said the investigation was ongoing and that the bureau could not comment on it or Grassley’s statement.

“When a seven-term U.S. senator cannot get answers,” Ghaisar family attorney Roy Austin Jr. said, “I guess it should not be surprising that an ordinary American family cannot get answers. The lengths that the U.S. government, our government, has gone to hide the complete truth from a grieving family is nothing short of shameless. But, there is one truth we know from the video — there was no reason for those officers to shoot and kill Bijan.”

On Nov. 17, 2017, Ghaisar was driving south on the George Washington Memorial Parkway when he suddenly stopped in a lane of traffic in Alexandria, Virginia, according to a Park Police traffic report. His Jeep was struck from behind by a Toyota Corolla driven by an Uber driver, who reported that the Jeep’s driver did not acknowledge him and instead drove off.