Rubuta ci gaba ga wannan sakin layi - Ya kasance koyaushe ɗan Democrat, amma ya shiga Jam'iyyar Republican a lokacin da aka kafa ta. Ya kasance wakili ne a taron Jam'iyyar Republican na 1856
Ka yi haƙuri. Ya kasance mai ba da kuɗin jihar New York daga 1860 zuwa 1861. Yayin da yake ba da kuɗi, ya karbi bakuncin uwargidan shugaban kasa, Mary Todd Lincoln, a cikin ɗakin a Astor House yayin da ta ziyarci New York. A lokacin yakin basasa na Amurka, a matsayin mai ba da kuɗi, Dorsheimer, tare da Gwamna Edwin D. Morgan, sun ba da kamfanin tufafi na Brooks Brothers kwangilar kera kayan aikin soja 12,000. Daga 1862 zuwa 1864, ya kasance mai karɓar haraji na cikin gida a Buffalo.