Mezue ahịrịokwu na-esonụ: "A More Perfect Union" bụ aha nke okwu nke Senator Barack Obama kwuru na March 18, 2008 n'oge asọmpi maka nhọpụta onye isi ala nke Democratic Party 2008. N'ikwu okwu n'ihu ndị na-ege ntị na National Constitution Center dị na Philadelphia, Obama na-aza nzaghachi na nlebara anya a na-elebara anya na arụmụka arụmụka nke Reverend Jeremiah Wright, onye bụbu pastọ ya na, ruo obere oge tupu okwu ahụ, onye sonyere na ya
mkpọsa. Obama mere nzaghachi ya site n'okwu gbasara agbụrụ na United States. E si n'Okwu Mmalite nke Iwu United States nweta aha okwu ahụ.