- ^ Freehling, 1991, p. 410: "Artificially segregating Whigs' response to gag and Texas crises…hinders awareness that the two issues came to a climax at the same time. The same Congress of 1844-45 which abolished the gag rule admitted Texas."
- ^ "Voter Turnout in Presidential Elections". The American Presidency Project. جامعة كاليفورنيا (سانتا باربرا). مؤرشف من الأصل في 24 سبتمبر 2018.
- ^ Freehling, 1991, p. 352: "The Gag Rule Controversy had sketched the battle lines" in the approaching crisis over slavery expansion in America and "hardened contestants for the worse crisis looming over expansion in America – and slavery – in the Southwest [i.e. Texas."
Wilentz, 2008, p. 558: With "the repeal of the gage rule, the conflict" – i.e. whether American republicanism could tolerate American slavery – "moved closer to becoming a permanent issue in national politics."