They are expected to become the targets of redirected enforcement resources.

But when immigration officials demurred, not considering him a priority given scarce enforcement resources, the police acted on their own.

Today, the I.R.S. has about half the law enforcement resources for each tax return that it did in 1988, the Syracuse researchers said.

He has said previously that he was concerned with how the I.R.S. uses its enforcement resources.

Proponents saw public beaches as an opportunity to accommodate demand for public baths and eliminate the expenditure of enforcement resources on ordinance violations for public bathing.

The growth in enforcement resources, the increase in removals and the focus on illegal workers are all illustrated by the rise in illegal working operations between 2004 and 2006.

Mr. Zoellick said last week that the administration was "devoting more enforcement resources" to China.

Scarce enforcement resources could be spent on apprehending real criminals and addressing national security threats.

In the United States, authorities have focused enforcement resources on larger scale operations like illegal immigrants who are employed by large companies.

The sentence is reasonable and its timing is certainly appropriate, given the available enforcement resources in a nation that depends so heavily on voluntary compliance.