Federal agents have arrested at least 200 people in immigration raids in Illinois, Indiana, Colorado and California over the past week. Most of the arrests took place in the Chicago area and northern Indiana. Beginning on Sept. 12, four ICE Fugitive Operations teams detained and arrested 144 people in nineteen towns in the region. Fifty-nine more immigrants were arrested in Colorado, where agents conducted raids in fourteen cities. In California, agents arrested twenty-one undocumented immigrants working at a chain of Chinese restaurants. Meanwhile, a new study by the Pew Hispanic Center has found that nearly one in ten Latinos in the United States reported that in the last year police or other authorities stopped them and asked them about their immigration status. Last year, ICE agents arrested more than 35,000 undocumented immigrants — more than double the number in 2006.