If Congress desires to condition federal funding, it must do so unambiguously
Such conditions must be legitimately related to a federal interest/objective
When spending becomes commandeering:
When the amount of federal money on the line is so large or so impactful that a state has no real, practical choice but to accept it
This pushes constitutional encouragement to unconstitutional commandeering
A high success rate on a condition encouraging State action does not make it per se coercive—just because it's working doesn't make it unconstitutional
Requirements: the condition on the federal money must: