Question: who was president when the uss pueblo was captured
Answer: Navy ship and its 83 crew members , one of whom was killed in the attack , came less than a week after President Lyndon B. Johnson 's State of the Union address to the United States Congress , just a week before the start of the Tet Offensive in South Vietnam during the Vietnam War , and only three days after 31 men of North Korea 's KPA Unit 12 had crossed the Korean Demilitarized Zone ( DMZ ) and killed 26 South Koreans in an attempt to attack the South Korean Blue House ( executive mansion ) in the capital Seoul .