After years of security briefings and thwarting terrorist plots, national security still keeps Eric Holder awake.
"I still worry at night," the U.S. attorney general told ABC's Pierre Thomas in a wide-ranging, exclusive interview on Wednesday.
"I'm concerned about whether or not we have done all that we can to ensure that every threat has been adequately examined, that we put up our defenses in appropriate ways," Holder said. "So, yeah, I still go to bed worried at night."
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