In 2011, Congress and President Obama went to the brink of government default when congressional Republicans balked at raising the nation's debt ceiling. The spring of 2013 appears to have another debt ceiling fight in store. Here are the top four things that have changed.
Tension and gridlock have defined dealings between President Obama and Congress ever since Republicans took control of the House in 2010. Yet big issues, including immigration and weak job growth, remain unresolved.
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