Joe Biden just made a retroactive tax increase. It's an issue that should be incredibly obvious, yet politicos love their tax revenues.
So I'm making an addition to my Four amendments.
It's very simple, no law may be made retroactive.
How can something be illegal before before there is a law? How can government require people to do things before there is a law? A retroactive tax could be ten years just as easily as ten days. You can't trust government, the entire Constitution restrains the Federal government.