The Dole test requires the following of a spending condition attached to federal funds given to a state: (1) that it is in pursuit of the general welfare, (2) the condition is expressed unambiguously (so states can take account of it in considering whether to accept the funds, (3) it does not violate an "independent constitutional bar" and (4) it is not coercive.
What is the one additional requirement that a federal spending condition must satisfy in order to be constitutional?
