Where does our hamburg and chicken come from??

I was just thinking.  They have made in USA or Mexico or wherever on a lot of products but I've never seen it on meat in the butchers section of a grocery store.  Now I'm not one for more laws but knowing where my food comes from is very important to me and I think many other people.  Makes me wonder why there isn't a law!   What country is paying off what politician or politicians?  Maybe the media should investigate.  Wait there is no free press so how could they investigate something that could kill Americans?