The use of full-body scanners and invasive pat-downs at airports around the US will not change for the "foreseeable future", Homeland Security Secretary Janet Napolitano said in an interview broadcast today.
While saying that she is always looking to improve the security systems in place, Napolitano added that the new technology and the pat-downs were "objectively safer for our travelling public".
Napolitano dismissed a recent news report about major airports failing secret tests designed to get contraband such as guns and knives past security screeners. The report said some airports had a 70% failure rate.
"Many of them are very old and out of date and there were all kinds of methodology issues with them. Let's set those aside," she said on State of the Union on CNN. "We pick up more contraband with the new procedures and the new machinery."
Napolitano defended the director of national intelligence, James Clapper, who did not know about a round-up of terrorist suspects in Britain when asked about the arrests on ABC News earlier this week.
The gaffe created an awkward moment for the man in charge of the US's intelligence community.
Napolitano and President Barack Obama's homeland security adviser, John Brennan, appeared on the show with Clapper. They said Clapper had been preoccupied with handling problems on the Korean peninsula and passage of a nuclear weapons treaty with Russia.
Napolitano said in the CNN interview that homeland security officials were fully aware what was happening in Britain.
"Well, let's be fair," she said. "I knew. John Brennan knew ... So one of the things I think that should be very clear to the American people is that those of us in homeland security who needed to know, we knew."
Officials have said Clapper had not been briefed on the headline-making arrests before being interviewed on ABC News.