How have certain Constitutional amendments affected the division of power between
the national government and the states? Note particularly Section 2 of the 13th
amendment and Section 5 of the 14th amendment and similar sections
to some subsequent amendments. These sections augment the power of Congress,
and, therefore, the power of the federal government.
13, 14, 15, 19, 23, 24 all give congress the power to make legislation regarded what the amendment is about. This gives more power to the government, (mostly congress) and expands the legislative branch's power