The memo asserts that Trump's executive order targeting such communities applies to a relatively small amount of money.
It's an important distinction ― almost all jurisdictions, even those labeled sanctuary cities, say they do comply with the law to provide information.
Orrick cited Trump's reference to the order as a "weapon" as evidence that the administration meant to cut off a broad swath of federal funding, not just three U.S. Department of Justice and Homeland Security grants as government attorneys argued.
A judge in April struck down Trump's executive order on the matter, saying the president has no authority to attach new conditions of his own to grants that were approved by Congress.
Attorney General Jeff Sessions has given an order to prosecutors stating they should seek the full charges in each criminal offense, reversing key Obama administration violations on drug offenses and conflicting with the goals of the White House to combat drug abuse, established conventions of addiction treatment, and what policy solutions to the drug epidemic should look like.
The San Francisco judge also said that statements by administration officials could lead one to conclude that the definition of a sanctuary jurisdiction is refusing to comply with immigration detainers. And he raised concerns that the specific immigration law the administration cited could be construed to require cities to comply with requests by US authorities to keep people in custody while they await deportation.
Auto ramming in Tel Aviv moments before Trump visit
Trump's remark during that news conference is the clearest statement of policy on the issue from the administration to date. Israeli forces also carried out raids in several neighbourhoods in occupied East Jerusalem .
The memo from Sessions will probably stir some relief among a broad swath of USA cities, including the nine that the Trump administration has labeled sanctuary jurisdictions so far.
At the end of his memo, Sessions hinted that while he is narrowing the definition of "sanctuary jurisdictions", he will continue to "point out ways that state and local jurisdictions are undermining our lawful system of immigration or to take enforcement action where state or local practices violate federal laws, regulations, or grant conditions".
Chicago Mayor Rahm Emanuel in January said Chicago would remain a sanctuary city despite threats to withhold federal funding. Estimates of the number of sanctuary cities has varied from more than 100 to about 600.
In a Monday memo detailing the legal definition for "sanctuary jurisdictions", Sessions said areas that match his definition will be ineligible to receive grants from the Departments of Justice or Homeland Security.