"Newark already has a policy of protecting undocumented immigrants from deportation by US immigration authorities", Newark Mayor Ras Baraka said in a statement Monday. "What they're saying is, 'We're not going to use our resources to separate families, to deport children, to tear communities apart'".
Chicago's mayor, Rahm Emanuel, who was previously chief of staff to Barack Obama, said: "I want to assure all of our families that Chicago is and will remain a Sanctuary City". "You are secure in Chicago, and you are supported in Chicago". The mayors must calculate the point at which resistance harms the communities they're fighting to protect.
Trump's threat to revoke Federal funding from these cities could have serious consequences; San Francisco gets approximately 5 percent of its budget from Washington D.C., according to Severin Campbell, director of the city's budget and legislative analyst's office, who spoke to Marketplace about the possibility of losing sanctuary city funding. "We celebrate our diversity and respect all D.C. residents no matter their immigration status".
Activists have expressed concern regarding the city's database of information on the 850,000 New Yorkers with a municipal ID card. The spending plan anticipates $1.3 billion in federal grants this year.
However, Kenney declined to speculate about what would happen if federal funding was cut.
On the list of sanctuary cities are some of the biggest cities in the USA, including New York, Los Angeles, San Francisco, Washington DC, Chicago, Dallas, Houston, and Detroit, among others.
He estimated that the total cost of such a wall would be around $10 billion (£7.5 billion).
"It is really premature", Castro said. We are no longer going to ignore the laws that help us in our goal and we will do everything in our executive power to see that the laws are safely executed, as the president is sworn to do.
Teen in Trump campaign hat beaten during school walk-out
Nancy Meza, a community organizer who announced the walkout, said she helped students organize it after they reached out to her. In Meriden, Conn., on Saturday, police arrested two men charged with beating and kicking a man who held a Trump sign.
Report warns of Asia arms race if Trump withdraws US forces
For his part, Mr Abe met with then-Democratic candidate Hillary Clinton during a September trip to NY , but not with Mr Trump. During the campaign Mr Trump said Japan and South Korea needed to pay more to maintain USA troops on Asian soil.
"Look at terrorism, look at the warnings that we have had from John Brennan, the head of the Central Intelligence Agency, from James Comey, the head of the Federal Bureau of Investigation, saying that ISIS was embedding terrorists, and the refugee flow in finding other means to come here and kill us", he said.
It is unclear whether this is legal, because USA law states federal funding can only be withheld if a city or state refuses to do something directly related to the funding they are receiving.
"We're already hearing stories of hate crimes and bullying", he said.
In summer of 2015, Immigration and Customs Enforcement (ICE) implemented a new program to try to establish a better working relationship with local law enforcement.
In Ohio, more than 2,400 students at Oberlin, a university known for being progressive, signed a petition demanding the campus become a sanctuary for undocumented immigrants.
"Our police officers are not immigration police, they do not ask about immigration status during stops or conversations with the public, nor do they intend to start now", she said. "We will stop illegal immigration". "He can try to offer incentives, but the more that those incentives look like coercion, the more it won't be legal". "We are not going to engage in law enforcement activities exclusively based on somebody's immigration status". "We'll cross that bridge when we come to it", he said. "The president doesn't have the authority to unilaterally decide how we move forward".