Port Authority of New York and New Jersey

Bi-state governmental authority (est. 1921) operating the NYC region's major transportation infrastructure across the NY/NJ state line -- JFK, LaGuardia, Newark, Stewart, and Teterboro airports, the PATH train, the George Washington Bridge, the Lincoln and Holland Tunnels, and seaport facilities. HQ at 4 World Trade Center, New York, NY. Direct evidence the functional NYC region has always crossed the state line.