| No it isn't everyone, it isn't even vaguely close to everyone. |
An accurate statement would be, "it has many prominent supporters from both parties".
But even if it was almost everyone (if it truly was everyone there wouldn't be any controversy, so "almost everyone" is the most even theoretically possible), that wouldn't make your case for you.
Your making multiple unsupported logical leaps. Assuming "almost everyone supports this" doesn't reasonable lead to the conclusion "this is a good idea". Assuming "this is a good idea" doesn't reasonably lead you to "the opponents of this are dishonest, they know its a good idea, but oppose it for selfish reasons only". And even assuming that last, that its only opposed for selfish reasons, doesn't equal "opposing this is treason", or even "almost treasonous". If every special interest objection to a good law, regulation or treaty, and every case of special interest support for laws, regulations, or treaties, that are against the general interest, was treason, the country would be loaded with traitors from all walks of life and from every political ideology or perspective.