The President's Radio Address
05/28/1993
https://www.presidency.ucsb.edu...
The order authorized the Secretary of the Treasury, in consultation with the Secretary of State, to take such actions as might be necessary ...
United States persons are prohibited from activities that promote or are calculated to promote such sales or supplies.
This is a proud time for America.
It is necessary to maintain in force the broad authorities necessary to apply economic pressure to UNITA.