The vast majority of undocumented immigrants in this country are here to earn a better life for themselves and their families, and they intend no harm. But some are in fact involved in gangs, the drug trade and other criminal activity, and pretty much everyone across the political spectrum agrees that those dangerous individuals should be deported. The stated policy of the Obama administration was that federal officials should focus their limited resources on those who pose a real threat, rather than casting a wide net in an attempt to deport illegal immigrants indiscriminately. That wasn't always the case, at least not at first. During the O'Malley and Obama administrations, Mr. Fritze showed that contrary to federal officials' insistence that they were only seeking local help in detaining serious criminals, most requests Maryland received were for people suspected of only minor offenses. But eventually, federal policies changed and immigration officials in fact became more selective — at least until Mr. Trump took office.