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http://www.thefreedictionary.com/haggle
haggle
To argue in an attempt to come to terms.
1. (intr; often foll by over) to bargain or wrangle (over a price, terms of an agreement, etc.);
haggle - wrangle (over a price, terms of an agreement, etc.); "Let's not haggle over a few dollars"

http://www.theage.com.au/news/National/Employers-cut-costs-w...
After years of haggling, the Victorian and federal governments agreed this year on a "common rule" formula, starting in January, which would give the workers equal benefits with their federal award counterparts.

http://blogs.reuters.com/david-alexander/page/12/
the U.S. Congress finally agreed to fund the federal government for the rest of this fiscal year after down-to-the-wire haggling between Republicans and Democrats.

http://www.interspecies.com/pages/1010news.html
After two years of haggling, The New York Times reports in an editorial, that this summer the International Whaling Commission had been expected to replace the current moratorium with limited hunting quotas