Last Saturday I was proud to be one of the thousands of people who went to Copley Square to protest the Trump administration’s immigration policies because I believe these policies negatively impact civil liberties (of citizens and legal travelers as much as anyone else) and public safety.  But I also think they are a MASSIVE waste of money, and my strong opposition to Trump’s threat to defund so-called “sanctuary cities” is due to the fact that this policy will make the costs associated with mass deportation less transparent and easier to hide, and thus make their job of justification easier. It will also affect all US cities and towns, not just the ones under attack as Sanctuary Cities.