Close the non profit loophole.
If I may speculate on a link between two pieces of history.
1.
History of the Greater Boston Police Council
In 1970, the City of Cambridge, Massachusetts, experienced a number of large civil disturbances in its
Harvard Square area. Assistance was requested and received from more than twenty-five neighboring
communities such that by the end of the first disturbance, more than 1,200 police officers were assembled in an attempt to quell the riots that had begun in protest to the Vietnam War. A major problem experienced by the Cambridge Police was that there was no way to command and control all
the police officers who were dispatched to Cambridge’s aid. ...
(It's a one page history, single-spaced on letterhead. Read The Whole Thing).
2. Wikipedia:
North Eastern Massachusetts Law Enforcement Council
...
In late 2014, the group took down its website offline after the media noticed its "mission statement" page.
The disorder associated with suburban sprawl as people migrated from larger cities, the development of the interstate highway system, the civil rights movement and the growing resistance to the Vietnam War threatened to overwhelm the serenity of the quaint, idyllic New England towns north and west of Boston,
- NEMLEC mission statement
I bet that the "growing resistance to the Vietnam War" which "threatened to overwhelm the serenity of the quaint, idyllic New England towns north and west of Boston" is an allusion to those same Harvard Square riots. County government has atrophied in Massachusetts, and the smaller city/town police departments use NEMLEC, etc. to pool their resources in that environment.
Would one rather resurrect at least county police departments -
(if not full-blown county government) - to manage SWAT?
If one wants to pay that price to make SWAT an official arm of government
with all the legal ramifications (open meeting laws, civil service, etc)...well,
that's an argument one can make.