Others have written to the Missouri Gaming Commission to say the change would lead problem gamblers back to temptation.

WSJ: States Rethink Gambling Limits

Under the code, "problem gamblers" would be able to apply for voluntary orders banning them from bookmakers in the area.

BBC: Betting machine

Panorama spoke to several problem gamblers, addicted to everything from scratch cards to online slot machines, and high stakes gaming terminals.

BBC: Gambling addict tells of fight to save family life