“All bills for raising revenue shall originate in the House of Representatives...”
That clause is dead in the Constitution.
Republicans went to the Supreme Court to protest that ObamaCare originated in the Senate when Democrats amended a House bill called "Service Members Home Ownership Tax Act of 2009" (H.R.3590 - 111th Congress) to gut it entirely and insert Obamacare into it before sending it back to the House. The Senate effectively turned the House bill into an empty container to get around the Origination clause.
The Supreme Court declined to hear the case.
-PJ