TSA agents routinely fail to spot threats, federal investigation finds

Undercover Homeland Security investigators trying to sneak mock knives, guns and explosives past TSA agents at airports reportedly were successful around third-quarters of the time, according to multiple reports of a classified briefing that was given to a House committee. 

The undercover agents carrying the items slipped past security checkpoints more than 70 percent of the time.  The TSA said it conducted tens of thousands of internal tests in 2016 and 2017, but did not disclose the results.

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