CustomsPage address: https://www.mnsu.edu/international/customs.html
Once you have passed the immigration inspection at your U.S. Port of Entry, you will be asked to declare to a U.S. Customs inspector what you have brought into the country. Usually, you will fill out a declaration from on the plane and make a verbal statement to the official, who may or may not inspect your baggage. You may bring in anything for your personal use without paying duty. Quantity limitations are placed on alcoholic beverages (1 liter, if you are over 21 years old); cigarettes (1 carton); cigars (100); smoking tobacco (2 kilograms). A total of $400 worth of gifts may be brought in duty free every six months. Any value over $400 will be assessed duty. Any amount of money may be brought into the U.S. without paying duty; however, you must declare any amount over $10,000. Certain articles may not be brought into the U.S. including meats, vegetables, fruits, plants, drugs without a prescription, articles made from endangered species, pornographic materials, lottery tickets, and switchblade knives. Food items that are canned or otherwise hermetically sealed are acceptable. For more information, contact a U.S. Consulate.
More information on U.S Customs can be found online.