The way they are going, they want a minimal federal government, and where it suits them, states being in control. For instance, the abortion issue.
But when it doesn't suit them, such as making decisions about who can stand for the presidency in a state, such as Colorado, then they pass the power back to Congress.
The inconsistency smells awful rotten. It has the look and feel of politics to me, not an unbiassed approach to the constitution.