The U.S. government has no evidence that drone sightings reported in New Jersey pose a national security or a public safety threat, White House national security spokesperson John Kirby said on Thursday. Speaking at a press briefing, Kirby said the drone sightings highlight an oversight gap, and he urged Congress to pass legislation to expand the ability of authorities to identify and counter drones that are a threat to airports or other critical infrastructure. The Department of Homeland Security and the FBI are investigating the sightings and working with state and local law enforcement using "numerous detection methods," Kirby said. The Pentagon has said an initial assessment had shown the drones were not from another country and that the U.S. military had not shot them down because they did not pose a threat to any military installations.