Well in the past after 911 we had to go into Iraq to maintain peace and order for both the people who reside there and the rest of the world to try to control terrorism and dictatorships from using weapons of mass destruction , for example Saddam Hussain , & Gadaffi. Today it is needed now more than ever due to the escalated amount of terrorists attacks reoccurring and terror cells sich as ISIS located in many Middle Eastern countries such as Iraq.
A feature of the original Constitution that led to the growth in power of the national government is the elastic clause. ... The Tenth Amendment reserved all powers not specifically given to the national government for the states, protecting the state power that the Anti-Federalists favored.