Not only that, but the power to tax is no longer the sole prerogative of Congress. Robert's decision effectively gives the SCOTUS the power to tax, since it can decide that something is a tax even if Congress expressly stated that it isn't a tax. This is Fedzilla on steroids and bath salts and it's about to eat your face off.
I suppose, also, SCOTUS can say that something is NOT a tax which Congress has passed as being a tax. Congress becomes an afterthought between this and the powers Obama has been assuming unto himself regardless of what Congress has voted. The board is being cleared piece by piece until all the power resides in one branch.
Actually they took that power a long time ago, when a Federal Judge ordered Kansas City to raise taxes in order to build the most outrageous school system ever, and it was a colossal failure.