Instead, they must pay for a lawyer, an option most detained immigrants cannot afford.

He said that 13 percent of illegal immigrants detained in Arizona last year had criminal records.

The 150,000 illegal immigrants detained and screened are a tiny minority.

In the second case, the court said the government could not detain immigrants indefinitely, even if they had committed crimes.

Further work is still needed, especially to make sure the government does not get expanded powers to detain immigrants indefinitely.

Consider the hundreds of immigrants detained since Sept. 11.

The new immigration service standards focus more on the specific needs of immigrants detained for civil removal proceedings.

In the last two months, the administration has sought increased power to wiretap, search and detain immigrants.

The center is used to detain illegal immigrants for deportation proceedings.

The government has barred, on national security grounds, the press and members of the public from immigration hearings for immigrants detained after Sept. 11.