[canweriotnow]

I think you're also forgetting: post Marbury v. Madison, the meaning of the Origination Clause is at the discretion of the Supreme Court.

Match point.

[bmelton]

Well, that the Constitutionality of all things is ultimately determinable by the Supreme Court is of course subject to judicial review, there was nothing in Marbury v Madison that has any direct impact on the Origination Clause whatsoever.

I don't mean to be dismissive, but I don't see what point it is that you're making. Please clarify?