A Bare Boned Government?

What are the bare bone areas that the Federal Government should involved in? The basics we want them working on with the taxes they take from us.

Defense -Most people when asked where their freedoms come from they will always say the Constitution; but without flesh and blood standing in front of the Constitution it would only be a piece of paper.

Secure our Borders - We must control and limit the people who come into this country.

Commerce - Both Interstate and with other nations needs to be mediated for a level playing field. Interstate Transportation, Air Traffic Control.

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What areas do you think should be added to this list and why? And is it covered under the Constitution?

I will update the list as we go.