The US is “powerless to stop UFOs entering its airspace,” a lawmaker have admitted as the Pentagon starts its classified briefings on mystery aircraft.

Lawmakers have also said national security agencies still aren’t taking the reports seriously of highly sophisticated and advanced flying craft of unknown origin violating the country’s airspace.

Republican representative for Tennessee Tim Burchett, a member of the House Transportation Aviation Subcommittee, said the Department of Defense (DoD) is also part of a conspiracy withholding the truth.

Burchett said: “I don’t trust the Department of Defense to get this right since leadership there has always been part of a cover-up.

“It is clear from the public evidence that we don’t have full control of our airspace.

“That’s a national security issue and it’s also unacceptable.”

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