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This Wednesday Jan. 14, 2015 photo made available by the Butler County Jail shows Christopher Lee Cornell. Cornell plotted to attack the U.S. Capitol in Washington and kill government officials inside it and spoke of his desire to support the Islamic State militant group, the FBI said on Wednesday. (AP Photo/Butler County Jail/AP)
This Wednesday Jan. 14, 2015 photo made available by the Butler County Jail shows Christopher Lee Cornell. Cornell plotted to attack the U.S. Capitol in Washington and kill government officials inside it and spoke of his desire to support the Islamic State militant group, the FBI said on Wednesday. (AP Photo/Butler County Jail/AP)

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    'Heck no, there's no way my son was involved with ISIS'

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'Heck no, there's no way my son was involved with ISIS'

Don Lemon speaks live with John Cornell, the father of Christopher Cornell, a suspect in a plot to attack the U.S. Capitol

'Heck no, there's no way my son was involved with ISIS'

Don Lemon speaks live with John Cornell, the father of Christopher Cornell, a suspect in a plot to attack the U.S. Capitol