<div>Canada proposes to tighten controls on the sale of guns. Prime Minister Justin Trudeau yesterday introduced a legislation which requires gun retailers in the country to keep records of firearms inventory and sales for at least 20 years.&nbsp;</div>''<div><br />''</div>''<div>The proposed bill will also expand the scope of background checks of those who want to acquire a gun. Personal history questions on a license application will cover a person's entire lifetime instead of five years.&nbsp;</div>''<div><br />''</div>''<div>The legislation will also require purchasers of rifles and shotguns to present a valid license. Currently, license verification is voluntary for non-restricted firearms like rifles.</div>''<div><br />''</div>