U.S. Rep. Earl Pomeroy, D-N.D, has introduced legislation to stop the USDA from lifting the U.S. ban on Canadian cattle because of the country's problems with BSE, according to a Dow Jones report.

Pomeroy said that his bill would prohibit USDA from allowing Canadian cattle across the border until the U.S. regains the major foreign beef markets it lost because of a BSE case found here in a cow imported from Canada.

Pomeroy said it was too early to tell what kind of support the bill would receive.

"One Canadian cow that had been brought into the United States ... cost us markets all across the globe," Pomeroy said."

By allowing in cattle from Canada - which just confirmed another BSE finding Sunday - USDA will find itself needing to prove to Japan and other countries that Canadian beef is also safe, Pomeroy said. "Suddenly we reintegrate with Canada and we've got to prove two systems, ours and Canada's," the congressman said. "It doubles our burden of proof."