a short form of "constitutional convention" defined in Article V of the U.S. Constitution which allows the states to convene a convention to propose amendments to the Constitution.
If 2/3rds of the States approve a constitutional amendment in a con-con then it would become an amendment to the Constitution if 3/4 of the States vote in favor of it.
A con-con is the only way to stop rampant, rabid and rapacious corruption in Congress. Congress will only vote to pass a law that benefits Congress. A con-con can stop the voracious appetite members of Congress have to make themselves wealthy at the expense of the people.
Man, a con-con sounds like a great idea. It could overturn Citizens United and give the people a fair, balanced health insurance reform bill that will stop the new IRS insurance revenue service in its tracks.
The only way to fix our broken U.S. government is with a con-con.