Will there have to be constitutional amendments saying1) bills must be clear and address only one topic Random historical tidbit: the Constitution of the Confe

Will there have to be constitutional amendments saying1) bills must be clear and address only one topic Random historical tidbit: the Constitution of the Confederacy (for non-Americans: the Southern states which seceded during our civil war) had this requirement built in (one subject per bill, and the subject must be clearly stated). It also had a line-item veto, and placed strict limits on federal spending. Of course, it also had text permanently establishing slavery...