1.   Border Patrol officials say the tactic discourages illegal border crossings.

2.   Law enforcement officials consider it the most corrupt of six border crossings in Arizona.

3.   The activists blocked traffic Saturday along the Tijuana border crossing.

4.   The two cities also are trying to make their united voice felt in the planning of border crossings.

5.   There are problems of delays at border crossings.

6.   Travellers leaving Peru were screened at border crossings and on arrival at international airports.

7.   Other agreements were concluded concerning border crossings, agricultural, scientific and cultural co-operation, recognition of educational qualifications and road transport.

8.   Drivers had to take a library of documents, including copies of invoices, details about loads carried and transit forms to be stamped at each border crossing.

9.   Already there is talk about using an experimental new lie detector in airports and at border crossings.