 Complete the following phrase:  After announcing in 1961 the American effort to land a man on the moon, President John F. Kennedy a Massachusetts native wanted to make Cambridge the site of NASAs newly expanded mission control center, and maneuvered to have several of the areas older industrial manufacturing and other dirty businesses removed by eminent domain. Kennedy allowed his Vice President Lyndon B. Johnson a native Texan to choose Houston, Texas for the complex, now the Johnson Spaceflight Center. To mark the beginning of construction, Kennedy would give his 