There has a been a sharp increase in the number of so-called “sanctuary cities” for President Joe Biden’s illegal migrants, according to a report by the Center for Immigration Studies.

Sanctuary areas are defined as “state and local jurisdictions that have laws, ordinances, policies, or practices that prevent state and/or law enforcement agencies from cooperating fully with ICE in gaining custody of criminal aliens who have been arrested for local crimes,” the organization explains.

“These localities seem to be flouting state law, and there should be consequences if they do not reverse the policy right away,” said Jessica M. Vaughan, the director of policy studies at the Center for Immigration Studies (CIS).

According to data from Immigration and Customs Enforcement (ICE), 170 new jurisdictions have been added to the sanctuary map maintained by the Center for Immigration Studies.

CIS has maintained the sanctuary map since 2015 after the organization filed a Freedom of Information Act request and was granted access to ICE data.

The organization has identified at least 425 jurisdictions that qualify as sanctuary areas for illegals, which represents a 40 percent surge over the previous accounting.

Added to the map are new locations in Virginia, North Dakota, Nebraska, New York, and Minnesota.

Some of the new listings include:

CIS adds that about 17 percent of the nation’s jails refuse to cooperate with ICE, meaning that many illegals are arrested multiple times for crimes but let go, only to be arrested again instead of taken into custody by immigration officials for deportation.

“Over the years, more than 10,000 criminal aliens have been released by local authorities due to sanctuary policies, and many of these criminal aliens have subsequently been arrested for additional crimes,” the CIS report notes. Vaughan said:

It is alarming to see the continued proliferation of sanctuary policies, especially in places like Virginia, where ICE has had to use its scarce resources to re-arrest violent gang members and rapists in our communities who were set free by local jails, when they should have been transferred directly to ICE custody for a plane ride home.

CIS wrote:

There is no good excuse or legal basis for these non-cooperation policies, which in many places have been adopted for political reasons. We have assisted a number of state and local officials in reversing sanctuary policies, and others should re-examine them in the wake of nearly four years of disastrous border policies that have waved in millions of unvetted migrants.

The report points out some of the recent examples of migrants becoming dangerous repeat offenders after being released by sanctuary jurisdictions.

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