The Department of Justice is reviewing the legal letters sent by nine jurisdictions provided to prove compliance with federal immigration law.

The Justice Department said Thursday it received "alleged compliance information" from each of the nine jurisdictions before the June 30 deadline and they are all currently under review.

"It is not enough to assert compliance, the jurisdictions must actually be in compliance," Attorney General Jeff Sessions said in a statement, calling cities with sanctuary policies ones that "put the lives and well-being of their residents at risk by shielding criminal illegal aliens from federal immigration authorities."

"These policies give sanctuary to criminals, not to law-abiding Americans. The Trump administration is determined to keep every American neighborhood safe and that is why we have asked these cities to comply with federal law, specifically 8 U.S.C. 1373," said Sessions.

In April, the Justice Department sent warning letters to the California Board of State and Community Corrections, Cook County, Ill., Chicago, Las Vegas, Miami, Milwaukee, New Orleans, New York and Philadelphia.

The onus was then placed on the jurisdictions to prove compliance with 8 U.S.C. 1373, a federal statute which prevents local and state governments from enacting laws or policies that limit communication with Immigration and Customs Enforcement or U.S. Customs and Border Protection about "information regarding the immigration or citizenship status" of individuals.