The Chicago Board of Ethics approved a staff opinion Wednesday, which does not yet have binding effect, that would limit city elected officials from receiving sports tickets at any price, unless the elected official were invited to the game to perform some “ceremonial duty or action.” The opinion was debated behind closed doors in executive session by the Board of Ethics and will not be be voted on until next month’s Board meeting, according to newly-appointed Chair William Conlon. The opinion will not take effect until voted on.