Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Jam'iyyar Democrat ta mamaye majalisar wakilai a lokacin mulkin Shugaba Franklin D. Roosevelt (1933 <unk> 1945), sau da yawa yana lashe kashi biyu bisa uku na kujeru. Dukansu 'yan Democrat da' yan Republican sun kasance a cikin iko a lokuta daban-daban a cikin shekaru goma masu zuwa. Jam'iyyar Democrat ta ci gaba da kula da majalisar daga 1955 zuwa 1995. A tsakiyar shekarun 1970, akwai manyan gyare-gyare na Majalisar, ƙarfafa ikon kwamitocin kwamitocin a kan kujerun kwamitocin da kuma barin shugabannin jam'iyyun su zabi shugabannin kwamitocin. An dauki waɗannan matakan ne don yin watsi da tsarin tsofaffi, da kuma rage ikon ƙananan mambobi na tsofaffi don hana dokokin da ba su so ba. Akwai kuma sauyi daga shekarun 1990 zuwa ga mafi girman iko na shirin majalisa ta jam'iyyar mafi rinjaye; ikon shugabannin jam'iyyar (musamman mai magana) ya karu sosai.  Tambaya: Me ya sa aka yi manyan gyare-gyare na gidan a tsakiyar shekarun 1970?
don rage tsarin tsofaffi, da kuma rage ikon ƙananan 'yan majalisa don hana dokoki