A plan to rescue Illinois' worst-in-the-country pension problem faces uncertainty in the final full day of the lame-duck legislative session. The House adjourned with a floor vote Monday on the contentious plan to reform the pension system. House committee members approved a proposal calling for more employee contributions and freezing cost-of-living increases to close the $96 billion deficit. Backers say it's a compromise on a complex problem that addresses many concerns. But opponents question whether it's constitutional.