Every year, the U.S. deports thousands of immigrants after they complete their prison terms -- including green card holders and even those granted asylum as refugees. It's a policy that applies to any legal permanent resident from just about any country. The policy dates back to the Clinton administration and after 9/11, the Bush administration stepped up enforcement in response to terrorism concerns. NewsHour Weekend Special Correspondent Kira Kay went to the Southeast Asian nation of Cambodia to meet a tight-knit community of deportees now fighting to change this policy.