In fact, for the first few days following the attacks, only those who could prove residency below 14th Street could pass.

They had to prove continuous residency in the United States since Jan. 1, 1982.

Parents will have 21 days to prove residency, and during that time students will be allowed to stay.

For many applicants, the biggest delay has been in collecting documentation to prove continuous residency.

The utility refused, requiring that the squatters prove legal residency.

Rather, officials must prove residency by a variety of circumstantial evidence.

The requirements for proving residency were also heightened.

Some who were ultimately able to prove legal residency were held for weeks in detention facilities out of state.

There are several ways to prove residency, Mr. Smith said.

All that is needed is a driver's license to prove residency in one of those five states.