The fedgov should be doing borders, treaties, defense, weights and measures is good, and I guess interstates but I’d rather the states took care of their own roads. Coast guard is good, too. They’ve bolluxed up the Post Office but I think that’s theoretically constitutional. They should do citizenship issues.
Other than that, (I may have missed something), everything else should be the states’ responsibility.
No income tax, also totally against property tax, and ID for voting, English only ballots, no vote by mail.