Here's an excerpt from an iBrattleboro post by the resolution's author:
>>Constitutional lawyers have assured us
that, under a legal provision known as “Common Law Application,” municipalities have indisputable legal standing to apply laws against any alleged criminal who violates Federal law — which encompasses violating treaties, being party to war crimes, or engaging in any other criminal activities. We have also been assured that the language in the resolution is well suited for implementing this provision.
In short, we have the legal justification to call for a legal remedy, because the government cannot nullify the rights invested in its citizens to invoke Federal or international criminal law. Put another way, any town has the right to pass laws to address war crimes, or any other Federal crimes, and to indict the people alleged to have committed them.

Now as most Americans know, the Constitutional method for addressing
criminality at the very highest levels of government is impeachment — a remedy used in the past to investigate far less egregious offenses. However, this Congress, unfortunately and incomprehensibly, has thus far refused to make use of it to protect the Constitution today.
This ballot referendum is not meant to supersede impeachment efforts.
Rather, it’s designed to parallel them or to provide an effective and legal alternative in the event that Congress continues to abrogate its responsibilities.
Impeachment is certainly the proper course to take, but impeachment
efforts have a finite shelf-life — they are limited to the time that the offenders occupy their high offices. In contrast, an indictment for criminal activity has no such time constraints. So if an impeachment hearing, inexcusably, never comes to fruition, this demand for indictment can live on in its stead, serving the same intent, and becoming the ultimate resort.
This resolution is simply a significant attempt to step into a breach and develop specific ways of dealing with a crisis.<<

[full text here: www.ibrattleboro.com/article.php/20080229203532149 ]