On Friday, Trump said that his administration is "strongly looking at" the possibility of releasing immigrants into sanctuary cities, undercutting earlier denials from his own administration officials.
One would have sent people already in detention and being held elsewhere to places with Democratic opponents of the president, while the other would have transported migrants stopped at the border directly to San Francisco, New York City, Chicago and other cities, the Associated Press reported.
While having stricter immigration laws may be meant to intimidate those committing crimes from doing so, nationwide sanctuary cities have proven to have their benefits, as some have suggested it makes the area safer.
In Philadelphia, known as the city of brotherly love, Mayor Jim Kenney said in a statement that his city "would be prepared to welcome these immigrants just as we have embraced our immigrant communities for decades".
White House press secretary Sarah Sanders said Sunday that she doesn't think congressional Democrats are "smart enough" to review President Donald Trump's tax returns should they succeed in obtaining the documents.
Sanders said it was one of many options on the table, though she hoped the solution would be for Congress to work with the president on comprehensive immigration reform.
White House senior adviser Stephen Miller urged senior DHS officials to make the plan a reality, the source said. Mr Trump in recent weeks, for instance, has discussed the idea of renewing his administration's controversial family separation policy - even as he's publicly declared he won't do that - and has threatened to completely seal the border despite opposition from many in his administration.
ICE arrests people in the U.S. illegally and also manages migrants who present themselves at border crossings and ask for asylum.
"We're seeing record numbers of apprehension, large groups and numbers in custody and we've arrived at the breaking point", Border Patrol official Brian Hastings said in a statement. As a result, more than 125,000 people have been released as they await court hearings - a practice Mr Trump has derided as "catch and release".
America's Voice also argued that by having these cities in place, police have the ability to focus on more pressing, serious crimes instead of spending their time arresting and detaining undocumented immigrants. The agency also uses commercial flights but requires that migrants to pay for those.
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. It's unclear if that would be the case for families, who usually arrive with no money and rely on relatives already in the U.S.to pay for transportation. Police in New York, Baltimore and Seattle rarely, if ever, disclose information about when suspected criminals in the United States illegally will be released from custody.