https://www.youtube.com/watch?v=kVq3Qd_LOD8 About 200 guests joined New York Gov. Kathy Hochul, Westchester County Executive George Latimer, and a host of other elected officials including mayors from a dozen or more Westchester communities at Regeneron’s campus in Tarrytown June 22 for a groundbreaking ceremony to officially launch the company’s $1.8 billion expansion. The governor, county executive, company…