Waiting periods for gun purchases may not make a difference, because "If somebody's decided that they're gonna take their life, they're gonna take their life."
No statistical evidence that a waiting period for handgun purchases reduces violence, lawmaker says [...] And a 2012 study by one researcher from the University of Cincinnati and another from Arizona State University found no statistical effects from waiting periods on gun crimes. [...] Wanggaard said, "There’s no statistical evidence that" a waiting period for handgun purchases "reduces violence whatsoever."