Legal Question in Civil Rights Law in Massachusetts

Contract law prescribes the limits within which private and public entities bargin and enforce their agreements. Underpinning the rich law of contracts in the Commonwealth of Massachusetts is a body of stated rules and assumptions collectively labeled "public policy". The ability to associate with other humans and to form close bonds some of which are celebrated by ceremony and honored in law is bound tightly in the group of human rights often considered to be "fundamental".

The Bill of Rights to the U. S. Constitution (See the 1st Amendment) and the Constitution of the Commonwealth provide vigorous protections for these rights which you discuss.

It is almost certain that such a prohibition in contract would be held to be unenforceable as against public policy. Though written and signed by the parties, it would be held illigal and hence unenforceable.