麻烦看一下这段英文是啥意思。

Animal Products and Animal By-Products

The importation of fresh, dried or canned meats or meat products is generally not allowed from most foreign countries into the United States. This includes products that have been prepared with meat. However, currently pork and poultry, which has proof of origin, from Canada is enterable. Not all Ruminant material can enter however personal use amounts of bovine meat or foods containing bovine meat or meat products (e.g., beef, veal, bison) are allowed in passenger baggage and mail, no import permit or other documentation is required.