Rudy Giuliani claim that US has not had terrorist attack in the last 8 years is incorrect, US experienced a spate of terrorist attack conducted by young American citizens radicalized by the ISIS. A good example is the Orlando shooting that left 49 people dead, the shooter pledged allegiance to ISIS.
Who let Rudy Giuliani on a stage to give a speech? He is a complete idiot. He stated that there was no terrorist attack on US soil until President Barack Obama took office. Hmmm, I seem to recall a little attack on 09/11 that left over 3,000 people dead. Maybe he hadn't heard of it, shocking since he's from New York.
Rudy Giuliani's claim hinges on what the definition of "terrorist attack" is and the context in which he is using it. Has the U.S. experienced a terrorist attack carried out by Islamic extremist groups such as ISIS under the Obama Administration? The answer is no. There have been domestic terrorist attacks by U.S. radical extremists and citizens influenced by ISIS, but there have been no attacks carried out directly by Al Qaeda or ISIS on U.S. soil. Giuliani is simply continuing his fact-barren rhetoric that Obama has been weak in attacking terrorism at home and abroad. That claim couldn't be further from the truth.
September 11, 2001 was certainly within the 8 year period prior to President Obama taking office and occurred during Rudy Giuliani's term as New York City's mayor. To state as a fact that there were no attacks in the 8 years preceeding Obama's presidency is blatantly incorrect and desires an apology from the former mayor.