Romney's tax situation

http://abcnews.go.com/blogs/politics/2012/09/romney-was-in-a-unique-position-on-tax-rate-campaign-says/ Mitt Romney paid extra taxes last year because of the publicity of him paying a 13% rate in 2011. The Donation that Romney and his wife donated would have brought their rate down to 10.38. Romney claimed he did go back over his taxes and over the past 10 years he never paid more less than 13%. Romney claimed to pay more than he owed because he had mad a commitment to the public that he would pay over than 13%. Although Romney told Muir that if he kept on paying more for taxes he would not be qualified to be president. Obama see to use this as attacking Romney on his low tax rates and give Obama more followers.