Law professor and former Tenth Circuit judge Michael McConnell puts the issue succinctly on Speaker Pelosi’s proposed “deem and pass” scheme. I don’t have a WSJ subscription, but fortunately, Michael Cannon does, and he has excerpted the pertinent analysis:
Under Article I, Section 7, passage of one bill cannot be deemed to be enactment of another.
The Slaughter solution attempts to allow the House to pass the Senate bill, plus a bill amending it, with a single vote. The senators would then vote only on the amendatory bill. But this means that no single bill will have passed both houses in the same form. As the Supreme Court wrote in Clinton v. City of New York (1998), a bill containing the “exact text” must be approved by one house; the other house must approve “precisely the same text.”