I believe this to be true and it needs to be repeated over and over again!!!
Article 1, Section 7 of the COTUS: All Bills to raise revenue must originate in the HOUSE OF REPRESENTATIVES.
Where did the (Confirmed) Affordable Care Act (CACA for short) orginate? Hint: Not the House.
If it was not written as a tax, why does it provide for 16,000 more IRS agents?