THE FDA ( the US Food and Drug Administration Dept. ) is bought and paid for by Monsanto. This dept. allows growth hormones like rBST to be injected in cows every two weeks to increase milk production by 25%, this hormone is band in 27 countries because of it's link to the creation of cancer. Because of this the importation of American milk and cheese is not allowed in Canada and Europe.
Canadian cattle are fed grass and hay, for the most part US cattle are fed corn because it is so cheap, but this not a natural food for cattle and is hard on their digestive system, subsequently the cattle become sick from eating corn so they are fed antibiotics. I could go on and on about other foods like the bad effects on people from eating GMO crops, corn being the main one.
Because of what is allowed by the FDA the instances of cancer is higher in the US and the life expectance has been falling relative to other Western Countries. If you do a search on the internet you will find it very shocking what the FDA allows to take place in the American food industry. AS THEY SAY ONLY IN AMERICA!!
Canadians need not worry about their food supply because Canada along with many other countries has band a list of things that they deem harmful to be use to increase the food supply to the determent of the health of it's citizens, which the FDA allows to be used in the US.