WASHINGTON - A Washington state cattle group says hundreds of cows from Canada are entering the United States each week without required health papers or identification tags.
That's raising concerns about more cases of mad cow disease south of the border.
The Cattle Producers of Washington obtained documents suggesting state officials are having problems tracking cattle that arrive from Canada.
All cows are supposed to have ear tags for electronic identification and health certificates to confirm they're under 30 months old because younger cattle are thought to be at less risk for contracting mad cow.
The U.S. Agriculture Department wants to start allowing older animals to cross the border, but some American groups oppose the move.
Canada confirmed its ninth case of the disease this month.
