Clinton ignored the WTC bombing on 1993. He ignored the bombing of the USS Cole. He ignored the embassy bombings. This emboldened terrorists.
Well, sure, if you want to call arresting, trying, convicting and jailing the perpetrators of WTC "ignoring," then, sure, I guess he ignored that. If Clinton is guilty of "ignoring" all of the above, then Reagan is certainly guilty of "ignoring" Pam Am 103, among other things.
And, of course, there's the small matter of that Time article which said that the administration DID have a plan in the wake of the Cole bombing, which was then "ignored" by his successor. Let's see, who was that again?