[Principled]

BTW, the 16th made the income tax constitutional,...

No - it made it constitutional to tax income they way we do it. The 16th is not what allows our income tax... it only allows it not to be apportioned IIRC.

[CSM]

What is the difference between:
1) "16th made the income tax constitutional,"
and:
2) "it made it constitutional to tax income they way we do it."