US Customs says:

If you are a private individual who wishes to send beverage and food items to the U.S., you should be aware that some items are highly restricted, particularly food items with meat products, including soup mixes, bullion, sausages, tinned meats, etc., and fresh produce. As a general rule, candies, condiments, spices, coffee and teas that are commercially packaged are ok, however bulk teas or spices, etc. are subject to inspection and if they are found to have insects, they may be seized and destroyed.