Members of Illinois’ state-run pension systems claim they’ve paid their fair share into the pension funds. To be sure, these workers have paid in what’s been required legally under mutually agreed upon contracts. But the benefits politicians and union bosses have negotiated for retirees are pushing the state’s pension systems to the brink of insolvency....

Even if Illinois pension funds see investment returns that exceed expectations, that still won’t be enough to plug the largest fund’s hole. The Teachers’ Retirement System reported its pension underfunding grew to $55.73 billion as of June 30, 2013 — an increase of more than $3.5 billion since the end of the previous fiscal year...