中国网站品牌栏目（频道）
Despite knowing for decades that terrorists could sneak bombs onto planes, the US government failed to close obvious security gaps amid pressure from shipping companies fearful tighter controls would cost too much and delay deliveries.
Intelligence officials around the world narrowly thwarted an al-Qaida mail bomb plot last month, intercepting two explosive packages shipped from Yemen with UPS and FedEx.
But it was a tip from Saudi intelligence, not cargo screening, that turned up the bombs before they could take down airplanes. Company employees in Yemen were not required to X-ray the printer cartridges the explosives were hidden inside, US officials said.
The scare is prompting officials in Washington and around the world to rethink air cargo security. Lobbying by the multibillion-dollar freight industry has helped kill past efforts to impose tough rules.
In 2004, when the Transportation Security Administration considered requiring screening for all packages on all flights, the Cargo Airline Association downplayed a terrorist threat. It argued slowing down shipping for inspections would jeopardize the shipping industry and the world's economy.
"As a practical matter, all-cargo aircraft operators today are permitted to accept freight from all persons and entities all over the world, including unknown shippers, precisely because of the lack of any credible threat to all-cargo aircraft," the association, whose members included FedEx, UPS and other shippers, told the agency.
The government agreed.
"TSA believes that a requirement to inspect every piece of cargo could result in an unworkable cost of more than $650 million" in the first year, the agency wrote in 2004. The government wanted security, TSA said, "without undue hardship on the affected stakeholders".
The US requires that all packages be screened before being loaded onto passenger flights originating in the US. But there's no such requirement enforced for all-cargo loaded onto US-bound international passenger flights or on cargo-only flights, such as UPS and FedEx planes.
Jetliner bombings in the 1970s and the explosion of Pan Am Flight 103 over Lockerbie, Scotland, in 1988 led the US to examine cargo security long before the Sept 11, 2001, attacks. But those efforts came in fits and starts.
（中国日报网英语点津 Helen 编辑）
About the broadcaster:
Lee Hannon is Chief Editor at China Daily with 15-years experience in print and broadcast journalism. Born in England, Lee has traveled extensively around the world as a journalist including four years as a senior editor in Los Angeles. He now lives in Beijing and is happy to move to China and join the China Daily team.
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