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Sessions strongly criticized Schaaf for her recent unusual public warning that an operation by federal immigration officers was imminent. He claims 800 "wanted criminals" eluded arrests as a result.
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"Here's my message to Mayor Schaaf -- how dare you, how dare you needlessly endanger the lives of our law enforcement officers to promote a radical open borders agenda," said Sessions
Watch the video player above for his entire message to the mayor.
Click here for the full story and click here for the latest on immigration and immigration reform.
VIDEO: Gov. Brown calls on Jeff Sessions to apologize to people of California