New legislation would require a seven-day waiting period in the sale of handguns to private individuals, in order that records of prisons could be checked and the sale of handguns to people likely to hurt other people thereby prevented. People opposed to this legislation claim that prison records are so full of errors that the proposed law would prevent as many law-abiding citizens as criminals from having access to handguns.
The principle 'No restrictions should be placed on the sale of merchandise unless sale of that merchandise could endanger innocent people' would do the most to justify opposition to the new legislation on the basis of the claim made by people opposed to the new legislation, if the claim is true.