Preston Huennekens Preston Huennekens serves as a Research Assistant at the Center for Immigration Studies (CIS), a research organization which focuses exclusively on immigration related issues. My Articles Guestworker Programs Remain Open to 80 Countries, 32 with Higher Than Average Overstay RatesJanuary 31, 2019 | 3:56pm EST Naturalization Data Show How Desirable US Citizenship Actually IsSeptember 19, 2018 | 10:54am EDT