Article I, Section 8, of the U.S. Constitution vests Congress with broad powers over the armed forces, including the power To raise and support Armies and To provide and maintain a Navy. As such, the size of the armed forces is a topic of perennial congressional interest and debate. Congress annually sets minimum and maximum strength levels for the active components and maximum strength levels for the reserve components. The House and Senate versions of the National Defense Authorization Act NDAA for FY2017 authorized differing levels for active duty personnel in each of the services, but these authorizations diverge most significantly with respect to the Army. The Senate version of the FY2017 National Defense Authorization Act approved Army end strength of 460,000 soldiers, while the House version approved an Army end strength of 480,000. The Senate figure represents a decrease of 15,000 soldiers in comparison to the Armys FY2016 end strength of 475,000, while the House figure represents an increase of 5,000.