Federal immigration authorities launched a large-scale enforcement operation in New York City on Monday, initially in Queens and expected to expand throughout the five boroughs. The operation targets individuals released from local custody despite being subject to ICE detainers, and agents are authorized to make "collateral arrests" of other individuals found to be in the country without authorization during enforcement actions. The effort follows weeks of warnings from White House Border Czar Tom Homan, who has criticized New York's sanctuary-style policies that prevent local jails from honoring federal immigration detainer requests.