I'm not sure that comparison makes the point you want, here in the UK you already get IDed to buy knives: https://www.gov.uk/government/publications/sale-of-kni

I'm not sure that comparison makes the point you want, here in the UK you already get IDed to buy knives: https://www.gov.uk/government/publications/sale-of-knives-voluntary-agreement-by-retailers/sale-of-knives-voluntary-agreement-by-retailers https://www.gov.uk/government/publications/sale-of-knives-vo...