Kammala wannan jumla: A matsayinsa na Mataimakin Lauyan kuma daga baya a matsayin Lauyan a Ma'aikatar Harkokin Wajen, Clark sau da yawa yana fuskantar mahimman batutuwa na sakamakon kasa da kasa. Alal misali, lokacin da
Juyin Juya Halin Mexico ya barke a 1911, an kira shi don yin yanke shawara mai mahimmanci kuma ya ba da shawarar matakan aiki ga sakataren jihar da Howard Taft. Musamman damuwa ga Clark shine wahalar tsarkakan zamanin ƙarshe waɗanda ke zaune a cikin yankunan Mexico kuma galibi ana kama su a tsakiyar rikici kuma kasancewarsu a Mexico ya ɓata wa 'yan juyin juya hali rai.