Mauser has been described as a Gun [laws in Canada|gun rights] advocate. He has said that "No methodologically sound study has found any important effect on homicide, suicide or violent crime rates from Canadian gun laws." In a 2007 article co-authored with Don Kates, Mauser argued that claims that guns kept in the home will probably be used to shoot a spouse "appear to rest on no evidence and actually contradict facts that have so uniformly been established by homicide studies dating back to the 1890s that they have become 'criminological axioms.'"