[TigersEye]

Enumerated powers to the federal government are not touched. The 10th reserves powers not enumerated to the states.

Time for you to read it again...

Amendment X

The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.

[BenKenobi]

Which is what I said.

Powers not explicitly enumerated to the federal government are reserved to the states.

The power to regulate goods crossing the federal border is an enumerated power of the federal government. Ergo the 10th can’t touch it.