A federal repeal the Blue Laws in the U.S.
Denying the sale of a legal items (alcohol) to legal residents due to time restraints, Ie Sundays for religious reasons (unconstitutional) and after specific hours depending on the region, county or state from 10p - 12m until 8am - 10am, when any other time the item is legal to sell.
Banning the sale of Alcohol on Sunday specifically has a religious intent. Claiming Sunday's as a "holiday" to justify the ban is unfair when on other national holidays you can still purchase alcohol products.