Congress has been operating beyond neglect for 226 years. Perhaps up until the act of 1871, it was inadvertent. However, after that act, states began to object and over time applications, were made at an increasing rate.
"A little-noticed change in the rules of the House may make it easier to change the U.S. Constitution to require a balanced federal budget."
Another aspect seen in the above link is the grey areas of Article V.
"Don Wolfensberger, a congressional scholar at the Woodrow Wilson International Center for Scholars and a resident scholar with the Bipartisan Policy Center, said many details of any constitutional convention remain unclear."