States don't realistically have options unless the Feds want to allow them to have options. The Feds do this by controlling the purse strings of Federal money.

States don't realistically have options unless the Feds want to allow them to have options. The Feds do this by controlling the purse strings of Federal money. The Feds have the right to deny State X federal funds if State X refuses to adopt Federal Regulations as required by Congress.