Where did the founding fathers go wrong?

[caretaker1]

Some reasons why it has morphed, IMO:

1) 16th amendment (Establishing the federal income tax): as the federal purse becomes huge, Congress/Pres. can manipulate States, who partially rely on federal funding, to do whatever the Fed wants them to do (do this or we won't give you $).
2) Interpretation of the "dormant commerce clause" which is very restrictive on state power (and conversely broad regarding Congressional power) (Art. I, sect. 8)
3) Apathy of the general populous to do anything about it