19 CFR §4.65a

1. (a)If a port director is notified by an officer of the United States Coast Guard that a detention order has been issued against a vessel engaged in the foreign trade under the International Voyage Load Line Act of 1973, clearance shall not be granted until the order is withdrawn.
2. (b)If a port director issues a detention order under the Coastwise Load Line Act, 1935, as amended, or is notified by an officer of the United States Coast Guard that a detention order has been issued against a vessel under the aforesaid Act, clearance shall not be granted until the order is withdrawn.