As immigration crackdowns intensify, the series, Walk The Line: ICE Nation, tracks the Chinese families who risked it all to reach the US, while meeting unlikely migrant allies and young activists stepping into a national divide. MINNEAPOLIS: A day after a United States Immigration and Customs Enforcement (ICE) agent shot dead Renee Good, a 37-year-old American, two teenagers drove six hours to the city where she was killed. Ben Luhmann, 17, and Sam Luhmann, 16, had been observing immigration