FILE - In this March 30, 2012, file photo, Immigration and Customs Enforcement agents take a suspect into custody as part of a nationwide immigration sweep in Chula Vista, Calif. A report issued Tuesday, May 8, 2018, by the nonpartisan Migration Policy Institute suggests that pushback from California and some cities is slowing the transfer of inmates into immigration custody despite the Trump administration stepping up immigration arrests overall. (AP Photo/Gregory Bull, File)