his interviews with Trump for the book TrumpNation: The Art of Being The Donald, he asked Trump about the copy of Two Sisters, which was then on Trump's plane. Trump repeatedly said his copy was the genuine work, despite O'Brien's statements to the contrary. By then, the Renoir copy was hanging in Trump's penthouse office. The Art Institute of Chicago released a statement refuting Trump's claim that his Renoir copy was the genuine one. Security issues On August 9, 2016, a man posted a viral video on YouTube, claiming to be an independent researcher who wanted to speak to Donald Trump. The next day, a man (suspected to be the same person as identified in the YouTube video) climbed from the 5th to the 21st floors using industrial suction cups for aid climbing, though he was arrested after nearly three hours. Serious issues concerning safety and security in the building arose after Trump became president-elect of the United States on November 8, 2016. Trump Tower served as a rallying point for protests against Trump after the election's results were announced, requiring the deployment of security measures. Pedestrian traffic on the east side of Fifth Avenue and the north side of 56th Street was restricted, and NYPD officers started questioning pedestrians about their destinations. The block of 56th Street between Fifth and Madison Avenues was closed completely to vehicular traffic, but the eastern part of the street, west of Madison Avenue, was subsequently reopened to allow local deliveries. Customers of the Gucci and Tiffany stores in Trump Tower's lobby were allowed to proceed, while other pedestrians were redirected to the opposite side of the street. During presidential visits, dump trucks from the New York City Department of Sanitation were parked outside the tower to prevent car bombs. Fire protection was also provided for the tower whenever Trump visited it. The press nicknamed the now-heavily secured building White House North, comparing it to the White House's West Wing. The Federal Aviation Administration imposed a no-fly zone over Trump Tower until January 20, 2017, and the NYPD stated that it expected to spend $35 million to provide security to the tower, subsequently revised to $24 million. As a result of the heavy security, businesses around the tower saw decreased patronage due to less foot traffic in the heavily secured area. Despite the heavy security after the 2016 election, there have been some detentions