above named shall have concurrent jurisdiction with the judges
of the Circuit and District Courts of the United States, in
their respective circuits and districts within the several
States, and the judges of the Superior Courts of the
Territories, severally and collectively, in term-time and
vacation; and shall grant certificates to such claimants, upon
satisfactory proof being made, with authority to take and
remove such fugitives from service or labor, under the
restrictions herein contained, to the State or Territory from
which such persons may have escaped or fled.