[irixusr]

"the government is given final rights"

Well not according to the US' citizenship test which states that the constitution is the top law whilst defining the rule of law as no entity, including the government, being above the law.

That's the theory anyways. In reality, might makes right now more than ever (there's a very interesting article from MIT about if technology fosters democracy. They conclude no)

[gnaritas]

The constitution is what grants them that power. The executive branch is charged with enforcing the laws of the legislative branch according the main body of the constitution and the 16th amendment says they can tax your income. Taxing bitcoin is something the constitution says they can do.