Wisconsin Gov. Scott Walker delivers his speech at Chatham House in central London, Wednesday, Feb. 11, 2015. Walker is leading a coalition of Wisconsin government and business officials on a trade mission in the UK that runs until Friday, Feb. 13, 2015. The trip gives him a chance to bolster his overseas and foreign policy credentials as he considers running for US President in 2016. (AP Photo/Lefteris Pitarakis)
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