That is as big a strawman argument as claiming that Clinton protected us from terrorists after the same terrorists attacked the WTC in 1992. Why did a 9 year peroid lapse after that 1992 attack here in the States?
True. No terrorist attacks occurred in the U.S. (unless there's more to the Murrah bombing than just McVeigh and Nichols) between 1993 and 2001.
However, there were terrorist attacks overseas against U.S. interests and personnel: Khobar Towers, the 2 U.S. embassies in Africa, the U.S. Cole.
Right now, I can't recall any terrorist attack on any U.S. interest overseas since 2001 (but if there has been, I can't remember it at the moment).