Responsibilities that we give to the government

There are many responsibilities that we give to the government. Identify one and identify which level of government- state or national- should have primary responsibility and discuss why.

There are some powers given to the national government- like currency and national defense- that are obviously given to the proper level of government and not given to the states. There might be some other national responsibilities you think best handled by the states and/or some state responsibilities best handled by the national government.