It was just over five years ago when an employee of a software company in Middleton, Wisconsin stood up from his desk and started firing on his co-workers. It had been a regular day for the employees of Paradigm until Anthony Vang pulled out a gun and suddenly became an active shooter. Vang was prohibited from owning a firearm, but was able to legally build his own. He was able to purchase all the parts necessary to assemble a functioning firearm. He didn’t have to undergo any sort of background check, and the parts used to build the gun contained no serial numbers and weren’t traceable. Since then, new laws have been passed at the federal level, requiring gun parts to be serialized by the manufacturer so they can be traced. The U.S. Supreme Court affirmed the rule. Yet Wisconsin has yet to act to even make these ghost guns illegal. It is not against state law for a felon who is not allowed to possess a firearm from building one himself. Now, some state lawmakers have reintroduced bills to close this ghost gun loophole. Five years after the shooting in Middleton, it is long past time for our lawmakers to act.