Federal government

Federal government
The U.S. Constitution creates a federal system of government whereby powers are distributed between a national government and fifty state governments. There are times when the federal government and state governments clash over state laws that may violate federal law or federal mandates. What methods does the federal government use to get states to comply with federal mandates? What are the ways that states can resist federal mandates? Find an example of a policy conflict (such as marijuana legalization, the Affordable Care Act, voting rights, civil rights, immigration, same-sex marriage, etc.) between a state (or states) and the federal government. What were the arguments made by the federal government and states about the issue? How were their differences resolved (if it is an issue that hasn’t been resolved, what steps have been taken by each side to advance their position)?