So the ideal as far as federal government is concerned is they, they devise policy guidelines and they provide financial inducements to states to implement various programmes but when it comes down to it they run up against the rock of the constitution  and the constitution says that the states derive their authority from this sacred document and they are not to be tampered with  and the consequence is that America has, not only a federal government, but fifty state governments er and those state governments are large enterprises which enjoy wide initiative  and they contributors, contribute to the divi diversity of the United States as a political system.