Nyorai kupfuurira kweiyi ndima - Mason akagadzirira gwaro rokutanga reVirginia Declaration of Rights muna 1776, uye mashoko ake akaumba zvakawanda zvemashoko akagamuchirwa neRevolutionary Virginia Convention yekupedzisira. Akanyorawo bumbiro romutemo renyika yacho; Thomas Jefferson nevamwe vakatsvaka kuita kuti gungano racho rigamuchire pfungwa dzavo, asi vakawana kuti shanduro yaMason yaisagona kumiswa. Mukati meHondo yeAmerican Revolutionary, Mason aiva nhengo yeimba ine simba yeVamiririri veVirginia General Assembly asi, kushatirwa kweWashington nevamwe, akaramba kushanda muContinental Congress
muPhiladelphia, vachitaura nezvezvinangwa zvoutano uye zvemhuri.