Competition among beef packing firms, use of so-called captive supply, and methods of price discovery have been prolonged, contentious issues in the U.S. beef industry for two decades or more. While of lesser apparent concern in Canada for many years, these same matters rose to the forefront of beef industry issues after the Canada–U.S. border closure that resulted from Canada’s first case of bovine spongiform encephalopathy (BSE) in May 2003.