The government to not spend a penny on anything NOT specific to Article 1 Section 8...Get rid of the FBI (Article 1 Section 8)
Constitutional amendments have expanded the powers of the federal government far beyond what was originally enumerated in Section 8. Also, the Commerce Clause provides the constitutional justification for a huge amount of what the FBI does.
The Commerce Clause is and excuse. The Framers and those that debated each clause disagreed with a broad interpretation of said clause and said so many times. The same holds to the General Welfare Clause.
I'd start with the repeal of the 17th Amendment. A lot os people would be tossed by their state's legislatures for their actions against the State' they are supposed to represent. Harry Reid comes to mind. He backed Obama against the best interests of Nevada.
Unless I'm mistaken, the founding fathers originally had the Articles of Confederation which was too weak to keep a federal government intact or useful. So pardon me for not giving 18th century people fresh from revolution absolute faith in their ability to plan for 200 years in the future.
You need to go back and do some research on the reason for the Constitution. The Articles of Confederation were indeed weak. They allowed the States to do things to each other that would over time have destroyed the United States and the reason the Senate and House were elected by TWO different election processes. The CA also did not protect the citizens form the government. The Constitution does, or did, until people started saying it said things it doesn't and ignoring what the writers said it meant.
Then there is the cherry picking of what to support and why. The out of context of Jefferson's "Separation of Church and State," quoted by the anti-religious. Far to many people believe the phrase is actually part of the Constitution and specifically the 1st Amendment. But if you quote Jefferson on the Right to bear arms, those same leftist will scream he was a racist slave owner and his words are from Satan himself. And God help anyone that points out Jefferson attempted to end slavery with 2nd Continental Congress, and later in Va House of Burgess and as POTUS. On that the left says ALL the history books are wrong.
The real problem is we don't, and have not for a long time, teach our own history. We spend our time examining their warts, instead of what they accomplished, then use those warts to mangle our laws into something we want.