The Supreme Court is expected to rule on the constitutionality of the Affordable Care Act this week and could potentially strike down part or the whole of ‘Obamacare.’ Below are 10 things you will miss about the law if the justices invalidate it:

1) Access to health insurance for 30 million Americans and lower premiums. More than 30 million uninsured Americans will find coverage under the law. Middle-class families who buy health care coverage through the exchanges will be eligible for refundable and advanceable premium credits and cost-sharing subsidies to ensure that the coverage they have is affordable.

2) The ability of businesses and individuals to purchase comprehensive coverage from a regulated marketplace. The law creates new marketplaces for individuals and small businesses to compare and purchase comprehensive coverage. Insurers will have to meet quality measures to ensure that Americans can access comprehensive coverage when they need it.

3) Insurers’ inability to discriminate against people with pre-existing conditions. Beginning in 2014, insurers can no longer deny insurance to families or individuals with pre-existing conditions. Insurers are also prohibited from placing lifetime limits on the dollar value of coverage and rescinding insurers except in cases of fraud. Insurers are already prohibited from discriminating against children with pre-existing conditions.

4) Tax credits for small businesses that offer insurance. Small employers that purchase health insurance for employees are already receiving tax credits to encourage them to continue providing coverage.