A lokacin, wasu masu ra'ayin mazan jiya suna matsawa ga yarjejeniyar kundin tsarin mulki don ci gaba da gyare-gyaren kasafin kuɗi, kuma Cox ya gudanar da bincike a kan wannan tambaya. Ya wakilci fadar White House a zaman sauraron karar da aka yi kan dacewar sakin John Hinckley daga asibitin St. Elizabeth bayan yunkurin Hinckley na
kisan gillar Shugaba Reagan, kuma ya jagoranci bincike da bincike wanda ya haifar da Arewa maso Yammacin Makarantar Shari'a Dean David Ruder da aka ba da shawarar ga shugaban kasa a matsayin shugaban SEC a 1987.