Post civil war... what are examples of the federal government getting more power?

Question

It was originally pre war very states rights and weak goc but then fed took more power and sucession issue never came up. BUT WHAT are examples of the fed government taking more power

---thanks and ull get best answer

Answer 1

Legislature making laws that you and I will never know unit its too late.

Federal government demanding that States use the new ID laws that require chipping the drivers license, fingerprinting and possibly 3 d imaging, or else you cant fly, enter government buildings.etc

Federal government not recognizing state medical marijuana cards