Why Did US Let Abdulmutallab Get on a Plane to Detroit?

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The father of Umar Farouk Abdulmutallab says he told US officials months ago that his son might be a terrorist threat. Some lawmakers say the Obama administration missed the warning signs - just as it did before the Fort Hood attack.

Homeland Security Secretary Janet Napolitano insisted Sunday that

there was no "specific and credible" information to put the

alleged attempted bomber of Northwest Flight 253, Umar Farouk

Abdulmutallab, on the federal "no fly" list.

Yet for the second time in a month, the Obama administration finds

itself defending its lack of action against a suspect whose

tendencies toward radical Islam had been …