美国暂停从墨西哥进口牛、马和野牛

Core Viewpoint - The U.S. has suspended imports of live cattle, horses, and bison from the southern border with Mexico due to concerns over the destructive "New World Screw-worm" (NWS) pest, which previously caused significant damage to the cattle industry [1] Group 1: U.S. Actions - The U.S. Secretary of Agriculture, Tom Vilsack, announced the immediate suspension of imports to prevent the potential spread of NWS [1] - The last significant NWS infestation took 30 years for the U.S. cattle industry to recover from, highlighting the severity of the threat [1] Group 2: Mexico's Response - Mexico's Secretary of Agriculture, Julio Berdegue, condemned the U.S. action but expressed hope for a swift agreement between the two countries regarding the NWS issue [1] - An agreement had been reached between the U.S. and Mexico the previous month to address the NWS problem [1]