Editorial: The most vocal proponents of the proposed law are not permanent residents of this island but rather a few of the wealthiest summer residents, who leave when the vacation months have passed.
Conclusion (therefore)
Anyone who supports the proposed law is serving only the interests of a few outsiders at the cost of creating problems for the island’s permanent residents.
Evidence
The most vocal proponents of the law are wealthy summer residents who are not permanent inhabitants and, therefore, will benefit from the law without suffering its adverse effects.
These summer proponents enjoy the benefits while evading the law’s problems that would affect permanent residents.
Evaluate
This argument contrasts a small group of wealthy, nonresident summer residents with the island’s permanent residents. The evidence implies that while the outsiders enjoy only benefits, the law creates significant problems for the locals. For the conclusion—that supporting the law serves only outsider interests—to hold, the argument must assume that any potential benefits for permanent residents are overwhelmed by the negative consequences imposed on them.
Goal
We need an answer that assumes that even if the law provides some benefits to permanent residents, those benefits are minor compared to the problems it creates for them. In other words, for the conclusion to be valid, the law must impose net harms on the locals such that supporting it really amounts to favoring outsiders.