Yet we share a huge border with Mexico and have been unsuccessful in preventing illegal immigration for decades.

He believes the military is needed to prevent illegal immigration to the United States and drug smuggling.

These boats were part of the closure imposed on the shores in order to prevent Jewish immigration.

This inherent environmental threat also prevented immigration from other regions.

The provincial legislature passed a strict law to virtually prevent Chinese immigration in 1878.

And we are still wondering whether there is a need for legislation preventing illegal immigration.

This is why I agree that drivers should be trained to prevent illegal immigration.

The policies you propose on justice and home affairs seek mainly to prevent immigration.

The first is to prevent illegal immigration, to strengthen border security, and fight this crime against human dignity.

It is most important to focus on action to prevent illegal immigration without jeopardising any further the institution of asylum, for example.