The idea of pressing immigration authorities to embrace the plan - which critics called an effort to use migrants as pawns to go after political opponents - was first reported in the Washington Post.
So-called sanctuary cities are locations where local authorities actively do not work with Immigration and Customs Enforcement officials to help round up people living in the country illegally.
At least twice in the past six months, the White House weighed a plan to pressure USA immigration authorities to release people detained at the border in these cities, which limit cooperation with federal immigration authorities, according to the Washington Post.
Pelosi's liberal district in San Francisco is a sanctuary city and California recently declared itself a sanctuary state.
"That was one of the most horrific moments in American history and for her to talk about it in such a dismissive way is frankly disgusting and abhorrent, and I'm glad the president is calling her out and holding her accountable for it", Sanders said.
Mr Trump tweeted on Friday: "Due to the fact that Democrats are unwilling to change our very risky immigration laws, we are indeed, as reported, giving strong considerations to placing Illegal Immigrants in Sanctuary Cities only".
FILE - President Donald Trump speaks to members of the media on the South Lawn of the White House in Washington, before boarding Marine One helicopter, Wednesday, April 10, 2019.
"Democrats say we must have open borders and that illegal immigrants have a right to be in this country at all costs", Gidley said told The New York Times.
Families being held at the border are already going through a hard process and for them to be dropped off wherever the Trump administration wants is "incredibly inappropriate and really dehumanizing", Garza said.
He also has warned that if Mexico doesn't stop the flow of drugs and illegal aliens within the next year, he will shut down the border.
Earlier this month, House Ways and Means Committee Chairman Richard Neal formally requested Trump's tax returns from the Internal Revenue Service, citing IRS code 6103, a 1920s-era tax statute that was little known until recently.
According to a 2015 Federal Bureau of Investigation crime data analysis report by Tom Wong, a professor of political science at the University of California at San Diego, sanctuary cities see 15 percent less crime than those deemed non-sanctuary cities.
Durkan wrote that immigrants, who she said make up 18% of the city's population, make Seattle "a stronger, more vibrant place" and make contributions to business, culture, law enforcement and other parts of its society. Flights chartered by ICE cost about $US7785 per flight hour, according to the agency, and require multiple staffers, including an in-flight medical professional.
At the same time, many "sanctuary" communities would likely welcome the immigrants in question. Cities, counties and some states have a range of informal policies as well as laws that qualify as "sanctuary" positions.
Under the Trump administration, ICE has significantly stepped up arrests, including of people who have no U.S. criminal records.