28 U.S.C. § 1405: Creation or alteration of district or division

Actions or proceedings pending at the time of the creation of a new district or division or transfer of a county or territory from one division or district to another may be tried in the district or division as it existed at the institution of the action or proceeding, or in the district or division so created or to which the county or territory is so transferred as the parties shall agree or the court direct.