At a hearing Thursday, Secret Service Director Mark Sullivan said "the threats right now in the inappropriate interest that we are seeing is the same level as it has been for the previous two presidents at this point."
Sullivan rejected a figure in a recently published book by Ronald Kessler, "In the President's Secret Service." Kessler says the threat has increased 400 percent since Obama, the nation's first African-American president, took office.
In October, Kessler told CNN he stands by the figure even though a law enforcement source had told CNN it's false.
So this Kessler guy you cited pulled his figures out of his ass.