1.   Mexico has tightened security along its southern border.

2.   What Buchanan is saying is that people who cross the southern border are enemies.

3.   With a peaceful and stable southern border, Begin felt free to concentrate on his northern front.

4.   The flow of Albanian escapees across the southern border into Greece accelerated dramatically in December, and turned into a flood in early January.

5.   In protest, France closed its southern border and proposed that the situation in Spain be discussed in the UN Security Council.

6.   The southern borders of the little Papal State now touched on the lands of the same family.

7.   Although a recent law prohibited dueling, he met Charles Dickinson on the banks of the Red River at the southern border of Kentucky.

8.   Among the threats that worry Russia are the proliferation of missiles and the threat of biological, chemical and eventually nuclear weapons along its southern border.

9.   Amnesty International is urging the Immigration and Naturalization Service to improve the conduct of its officers amid allegations that agents along the southern border abused illegal immigrants.