Libertarian presidential nominee Bob Barr’s campaign filed suit Tuesday seeking to remove Republican John McCain and Democrat Barack Obama from the ballot in Texas, alleging that the two major candidates missed the deadline for officially filing to be on the ballot. The lawsuit by the former Republican congressman from Georgia claims that neither McCain nor Obama met the requirement of Texas law that all candidates provide “written certification” of their nomination “before 5 p.m. on the 70th day before election day” because neither had been formally nominated by their respective parties in time. That would have been Aug. 25. Obama...