In no trial or hearing under this act
shall the testimony of such alleged fugitive be admitted in
evidence; and the certificates in this and the first section
mentioned shall be conclusive of the right of the person or persons
in whose favor granted to remove such fugitive to the State or
Territory from which he escaped, and shall prevent all molestation
of said person or persons by any process issued by any court,
judge, magistrate, or other person whomsoever.

SEC. 7. _And be it further enacted_, That any person who shall
knowingly and willingly obstruct, hinder, or prevent such claimant,
his agent or attorney, or any person or persons lawfully assisting
him, her, or them, from arresting such a fugitive from service or
labor, either with or without process as aforesaid; or shall
rescue, or attempt to rescue such fugitive from service or labor,
from the custody of such claimant, his or her agent or attorney or
other person or persons lawfully assisting as aforesaid, when so
arrested, pursuant to the authority herein given and declared: or
shall aid, abet, or assist such person, so owing service or labor
as aforesaid, directly or indirectly, to escape from such claimant,
his agent or attorney, or other person or persons, legally
authorized as aforesaid; or shall harbor or conceal such fugitive,
so as to prevent the discovery and arrest of such person, after
notice or knowledge of the fact that such person was a fugitive
from service or labor as aforesaid, shall, for either of said
offences, be subject to a fine not exceeding one thousand dollars,
and imprisonment not exceeding six months, by indictment and
conviction before the district court of the United States for the
district in which such offence may have been committed, or before
the proper court of criminal jurisdiction, if committed within any
one of the organized territories of the United States; and shall
moreover forfeit and pay, by way of civil damages to the party
injured by such illegal conduct, the sum of one thousand dollars
for each fugitive so lost as aforesaid, to be recovered by action
of debt in any of the district or territorial courts aforesaid,
within whose jurisdiction the said offence may have been committed.

SEC. 8. _And be it further enacted_, That the marshals, their