Hi Tiger~

They will be banned because they are like land mines
I thought that active jamming already was illegal in the USA? it certainly is over here (Wireless Telegraphy Act 1949).

You can get a license for them but you would need a very good reason such as security (HIJACK) or safety. Private individuals wouldn't have a chance.

Funnily enough a lot of public places (pubs and restaurants) have absolutely lousy reception anyway because of the structural steelwork.

I believe you can get special wall cladding that does the job passively, so I suppose that is legal still.