A Cook County judge ruled Friday that Chicago's plan to change city workers’ pensions was unconstitutional. The city vows to appeal the decision. We look at the ruling, whether any pension reform can be constitutional, what the consequences are to the city's plummeting bond rating, and whether the city will have to raise taxes to cover the pension liability. 

Mayor Emanuel and the city of Chicago are back to square one in efforts to resolve the funding crisis for two of the city's four pension funds, likely exacerbating the city's ongoing fiscal problems.