07/16/2012 09:58 am ET | Updated Jul 16, 2012

Mitt Romney Called On Democratic Opponents To Release Tax Returns In Past Campaigns

Washington (CNN) -- Mitt Romney has steadfastly refused to release more than two years of tax returns despite mounting pressure from the Obama campaign and even some fellow Republicans, who are beginning to grumble both publicly and privately that Romney should disclose more details about his income and put the nagging issue behind him.

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