In the United States of America, Easter is not a federal holiday. Easter is a holiday celebrated primarily by Christians, the largest religious group in the United States. Therefore, although it is not legally recognized, it is celebrated by the vast majority of Americans.
Closing businesses on Easter is up to the discretion of the business owners. Easter is always celebrated on Sunday, so most schools and businesses are typically already closed. Many Christian-affiliated schools and businesses will also close on the Friday before Easter. Some schools will also go on a "Spring Break," which can coincide with the Easter holiday.