Because biological control concerns intentional introductions, usually by experts, if we cannot agree on sensible policies for biocontrols, it is unlikely we can develop sensible policy for less formal intentional introductions or accidental invasions.
Biological controls are invasions.
The weed control community is way out in front on asking good questions. The zeal of using alien agents to control native pests is frightening. There is a lack of recognition that biocontrols are invasions There is a complete absence of legal literature on biological controls. Biological literature largely fails to recognize that biocontrols, like unwanted invaders, violate ecosystem integrity. Popular and technical press characterize biocontrol in only positive terms.