Principle of FEDERALISM in US Constitution DOESN'T refer to a strong central FEDERAL government
(e.g. in many other countries such as Russian Federation, Pakistan, India etc.)
Instead, it refers to a loose "Federation" based on a minimum-yet-optimal "FEDERAL" Constitution :
Tying together multiple strong, individually self-sufficient state governments.
Going back to the days of founding of the nation, referencing the original "Federalist Papers",
Alexander Hamilton-John Adams "Federalist Party" faction
& their vigorous, spirited & @ times violent debates w/ Thomas Jefferson-James Madison Democrat-Republican faction :
It was Hamilton's Federalist faction that emerged as losers in the early years.
Hamilton's FEDERALISM idea was in fact of a strong central FEDERAL government similar to the Russian Federation of today.
Jefferson-Madison faction emerged as winners in the early years.
However, it's obvious that the nation has strayed very far away from the principle of FEDERALISM as envisioned by those Jefferson-Madison winners from the early years.
