 He and Tocqueville resigned together when the ministry fell, and they retained their views following the coup d'état of 2 December 1851 by withdrawing from public life and refusing to support the imperial regime.One of the opponents of the coup d'état, he was imprisoned for some time in the fortress of Mont Valérien.Although Tocqueville and Beaumont remained close friends, Beaumont was forced financially to turn away from society and retire (along with his family) to his chateau de Beaumont-la-Chartre.