[Repeal The 17th]

Is there anything in federal law that requires the states to enforce those federal laws?

I am thinking bout everything from federal restrictions on
guns, counterfeiting, drugs, alcohol, etc.

(not even to mention the myriad of other federal laws re:
how much water my toilet and washing machine uses,
or vehicle emissions, or pulling the tag off my mattress, etc.)

Unless also prohibited by a mirroring state law,
is there anything in federal law that requires the states to enforce those laws?

Could state and local jurisdictions simply refuse to enforce them?

Serious question.

[Liz]

Mmmmm........Arpaio suing for the reason stated seems a bit simplistic.

Arpaio should let the rubber hit the road.

(1) He should sue the malpractice insurance companies of any lawyer representing illegals and/or advising them on ways to contravene US law.

(2) Mobilizing the Bank Secrecy act should also be considered-----to determine who exactly is aiding and abetting crimes against the state by funding these felons.

(3) Lawyers who attempt to bring to court clients "w/ unclean hands" (a legal term meaning those who committed crimes) should be reported to the state's Bar Association....and considered for disbarment.

[Lurking Libertarian]

Unless also prohibited by a mirroring state law, is there anything in federal law that requires the states to enforce those laws?

No.

Could state and local jurisdictions simply refuse to enforce them?

Yes, and many already do.