A cornerstone of the plan is Biden’s decision for the government to purchase 500 million coronavirus rapid tests and ship them free to Americans starting in January. People will use a new website to order their tests, which will then be sent to them by U.S. mail at no charge. It marks a major shift for Biden, whose earlier plan had called for many Americans to purchase the hard-to-find tests on their own and then seek reimbursement from their health insurance.