Many state governments argue that making federal funds dependent on state cooperation with national goals is ‘federal blackmail.’? Discuss?an example

I need a 25 sentence write-up on the following topic in 12 hours;

 Many state governments argue that making federal funds dependent on state cooperation with national goals is "federal blackmail."  Discuss an example of this federal government practice and the reasons why the federal government resorts to using financial incentives (and disincentives) instead of simply passing laws requiring states to do what the federal government wants. 

 The discussion post should incorporate one content aspect from that assigned material and should contain;

– one website research reference, with a citation at the end of the post.