the federal government is authorized to tax imports and exports
The Constitution places extremely heavy and borderline burdensome limits on the legislative and law enforcement powers of the federal government. Since around the turn of the twentieth century these lawful limits have largely been ignored by those in power in the federal government.
Mayflower Compact
There is no one clause addressing national (federal) government power. Practically the entire document is a collection of limits and blocks, and checks and balances set upon the power and authority of the federal government.
The Constitution of the United States, for the most part, has described the role of the Federal government, the basic rights of US citizens, and the limits of the Federal governments powers. As such, it's my opinion that it is a current and thus primary source of information.
Reserved powers
reserved poweres
The US Constitution and its Amendments
reserved poweres
Reserved powers
There are many. 1 is the government cannot veto state laws.
Reserved powers
reserved poweres
Reserved powers
By no means- but it DID place specific limits on what the Federal government could NOT do.
the structure of the federal government the Twenty-second Amendment
the federal government is authorized to tax imports and exports