Sentence: 'The chairman of the Republican National Committee , Ken Mehlman , may have thought he would get a laugh when he used this line Friday in a speech to the Southern Republican Leadership Conference : " Not only can the Democrats not settle on an agenda , they ca n't even agree on a slogan . "', Argument/Subject 1: 'ken mehlman', Argument/Subject 2: 'republican national committee'
be chairman of