New York Consolidated Laws, Correction Law - COR § 612. United States prisoners

1. A sheriff must receive into his or her jail and keep a prisoner, committed to the same, by virtue of civil process issued by a court of record, instituted under the authority of the United States, until he or she is discharged by the due course of the laws of the United States, in the same manner as if he was committed by virtue of a mandate in a civil action, issued from a court of the state.  A sheriff or jailer, to whose jail a civil prisoner is committed, as prescribed herein, is answerable for his or her safe keeping in the courts of the United States, according to the laws thereof.

2. The commissioner may enter into an agreement to provide for custody by the department of persons who are being detained by virtue of an order issued by a court of the United States.  An agreement made under this section shall require the United States to pay the cost of treatment, maintenance and custody furnished by the department.