Who runs the New York-New York Hotel & Casino that is located in Tropicana in Las Vegas?
It is owned and operated by MGM Resorts International.
Title: New York-New York Hotel and Casino
Passage: New York-New York Hotel & Casino is a hotel and casino located on the Las Vegas Strip at 3790 Las Vegas Boulevard South, in Paradise, Nevada.  It is owned and operated by MGM Resorts International.
Title: Tropicana – Las Vegas Boulevard intersection
Passage: The Tropicana – Las Vegas Boulevard intersection on the Las Vegas Strip (Tropicana Avenue and Las Vegas Boulevard), is noteworthy for several reasons.  It was the first intersection in Las Vegas completely closed to street level pedestrian traffic and its four corners are home to four major resorts: Excalibur Hotel and Casino, Tropicana Las Vegas, New York-New York Hotel and Casino and MGM Grand Las Vegas—the latter has 5,044 rooms and was once the largest hotel in the world.  The resorts at the four corners have a total of 12,536 hotel rooms as of 2016.
Title: Gallagher's Steakhouse
Passage: Gallagher's Steakhouse, a steakhouse restaurant located at 228 West 52nd Street in the Theater District in Manhattan in New York City, was founded in November 1927 by Helen Gallagher, a former Ziegfeld girl, and wife of Edward Gallagher (1873–1929), and Jack Solomon, a colorful gambler with a large loyal following from the sporting element.  These were the days of Prohibition and Gallagher’s was one of the first speakeasy gathering places for gamblers, sports figures, and stars of Broadway.  There is now a location in the New York-New York Hotel & Casino in Las Vegas.
New York-New York Hotel and Casino Tropicana – Las Vegas Boulevard intersection