Rudy Giuliani, former New York City Mayor and current advisor to Republican presidential nominee Donald Trump, affirmed support for requiring some Muslims to wear electronic monitoring devices on July 27.
"I would think that's an excellent idea," Giuliani said at an "RNC at the DNC" media event in Philadelphia, reports NJ Advance Media.
"If you're on the terror watch list, I should you know you're on the terror watch list," Giuliani added. "You're on there for a reason."
U.S. terror watch lists are notorious for errors and are not considered criminal proof in the American legal system.
A suspect, who was accused of taking part in a murder of a priest in Normandy, France, on July 26, was wearing an electronic monitoring bracelet.
"I put undercover agents in mosques for the first time in January 1994," Giuliani stated. "I did it because the 1993 bombing was planned in a mosque in Union City, New Jersey, and a second plan was uncovered to bomb our subways, which was foiled. And I kept those police officers in those mosques until I left as mayor."
Giuliani told The Intercept on July 19 that the police spying on mosques during his administration "helped stop, hopefully, three or four attacks," and that the leads they received as a result "helped us immensely. And they were enormously valuable to us. And Mayor de Blasio doesn’t know what he’s talking about."
When the news site asked Giuliani to name one terror plot that was prevented due to the surveillance, he replied, "Of course I cannot! That’s top-secret information. I’m not Hillary Clinton, I do not reveal top-secret information."
Giuliani left office almost 16 years ago, in December 2001.
The New York Times noted in 2008 that the New York Police Department objected to Giuliani's decision to place the NYPD's emergency command center in the World Trade Center in a 1998 eight-page memo.
"Seven World Trade Center is a poor choice for the site of a crucial command center for the top leadership of the City of New York," a panel of police experts stated in the confidential memo, which brought to light "significant points of vulnerability."
Seven World Trade Center was decimated during the 9/11 terrorist attacks while Giuliani was still in office.