Legislators say workers and equipment building a section of the barrier have gone 10 metres (yards) into Mexico.
The alleged border violation comes ahead of a high-level meeting in the Canadian capital Ottawa.
US, Mexican and Canadian foreign ministers are to discuss border security and trade issues.
Mexican legislators said they had photographs and video, taken on Monday, of the workers and heavy-duty construction equipment that showed them about 10 metres inside Mexico near the border city of Agua Prieta and the town of Douglas, Arizona.
I almost soiled myself laughing when I read this.Posted by Muddy at February 24, 2007 06:23 PM