Exactly. Plus, it violated Article 1 Section 7, which requires that revenue bills originate in the House. Then, the Democrat leadership argued that it wasn't a

Exactly. Plus, it violated Article 1 Section 7, which requires that revenue bills originate in the House. Then, the Democrat leadership argued that it wasn't actually a tax, so Clause 1 didn't apply. Then, in the infamous Supreme Court case, they argued that it was a tax and therefore couldn't be challenged before collections actually begin due to the Pre-emption clause. The process of taking a bill in progress and completely rewriting it (while retaining "credit" for those procedural steps the original bill completed) is commonly known as "gut-and-amend".