Maine shooter had numerous run-ins with law enforcement

Contributing sentiments towards policy:

60% : Federal law requires buyers to apply with the Bureau of Alcohol, Tobacco, Firearms and Explosives and be approved.
56% : Card already had submitted information to the federal government to purchase it, and federal authorities had approved the sale to that point, he said.
52% : State Department of Public Safety Commissioner Michael Sauschuck has said Card believed "people were talking about him and there may even have been some voices at play.
48% : Silencers are more heavily regulated under federal law than most firearms.
48% : "Family members of Card told federal investigators that he had recently discussed hearing voices and became more focused on the bowling alley and bar where the shootings took place, according to law enforcement officials who spoke to The Associated Press on condition of anonymity in order to discuss details of the investigation.

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