Question: When did the smoking ban come into effect?
Disambiguated questions and answers: question: When did the first statewide smoking ban come into effect?
By what date had 26 states enacted statewide bans on smoking in all enclosed workplaces, including all bars and restaurants?
When was a law passed banning smoking in all interior spaces owned, rented, or leased by the Executive Branch of the Federal Government?
answer: 1995
July, 2018
August 9, 1997
Natural Questions answer: 1995 (from the Wikipedia article "List of smoking bans in the United States")