Social Security Offices and DMV's

Why doesn't the US government hire more people to work at the Department of Motor Vehicles and or the Social Security Offices during this low employment era? I spent 4hrs today waiting for my turn at the SS office. All I had to do was get a letter verifying that I'd changed my married name, which took all of 5mins once I got to the window, and yet waited 4hrs! There were about 6 our of 20windows open servicing customers, the rest were closed shut tight! Why oh why don't more people work at these government offices where hundreds of people need to get helped daily? I just don't understand it! Come on US government, hire some folks! We'd all appreciate it! Spend that stimulus money, go for it!