Federal Bureau of Investigation (FBI) agent about the strange nickel. The FBI was not able to link the nickel to KGB agents until a KGB (Committee on State Security of the Soviet Union) agent, Reino Häyhänen, wanted to defect to the West and the United States in May 1957, including Vilyam Genrikhovich Fisher (aka Rudolph Ivanovich Abel) in the Hollow Nickel Case. Closure In the face of the continued economic pressure brought on by a strike by the local reporters' trade union, the Newspaper Guild, and later attempting to sell the Eagle, the paper published its last edition on January 28, 1955, and shut down for good on March 16, 1955. Thomas N. Schroth, the publisher's son, served as the newspaper's managing editor in the last three years of its existence. Thereafter, he became editor of Congressional Quarterly and founded National Journal in Washington, D.C. This occurred around the same time as the Brooklyn Dodgers professional baseball team (who had played since 1913 at Ebbets Field in Crown Heights) shocked New Yorkers by joining Manhattan's New York Giants (a fellow National League team based at the Polo Grounds in Washington Heights) in moving to the West Coast, becoming the Los Angeles Dodgers and the San Francisco Giants in the process. The loss of both primary national icons of the borough's identity within two and a half years — compounded by such factors as longstanding institutional decline at the Brooklyn Navy Yard and the Brooklyn Army Terminal, which were both decommissioned in 1966; the precipitous contraction of the borough's manufacturing sector after state-level right-to-work laws were permitted by the 1947 Taft–Hartley Act; the advent of containerization and the 1956-1962 development of the Port Newark-Elizabeth Marine Terminal in New Jersey, largely supplanting the panoply of breakbulk cargo facilities that had scaled Brooklyn's western waterfront from Greenpoint to Bush Terminal for decades; and the deeply intertwined phenomena of redlining, suburbanization and white flight — sent the borough into a psychological and socioeconomic slump. Comparatively sanguine developments — ranging from the initial wave of professional-driven gentrification in Brooklyn Heights, Cobble Hill, Boerum Hill and Park Slope (leading to the former neighborhood's designation as New York City's first landmark historic district in 1965) to the Immigration and Nationality Act of 1965 (which removed racially-based restrictions on immigration to the United States, enabling many neighborhoods to be revitalized by migrants from Eastern Europe, Asia, Latin America