Illegal immigrants and violence are big concerns along the Mexican border.
Groups in Mexico are having turf wars, causing violence to cross over to American soil. On Tuesday, a Senate committee took a hard look at these problems and what they can do about it.
The virtual fence being built along the border was discussed.
It has not worked the way it was intended. Senator John McCain has called it a waste of taxpayer money.
He suggested putting 3,000 National Guard troops at the Mexican Border.
