The problem, and the trick, of this word-game regarding empathy, is frequently the removal of context. For example, when you talk about "forcing mentally ill people on the street to get treatment," we divorce the practical realities and current context of what that entails. To illuminate further, if we had an ideal system of treatment and system of judging when it was OK to override people's autonomy and dignity, it would be far less problematic to force homeless, mentally ill people to get treatment. The facts are, this is simply far from the case, where in practical reality lies a brutal system whereby we make their autonomy illegal, even their bodily autonomy to resist having mind-altering drugs with severe side-effects pumped into their bodies, for the sake of comfort of those passing by. Likewise, we can delve into your dismissal of the semiotic game you play with legalism as a contingency for compassion, actually weighing the harm of particular categories of cases, and voiding context of the realities of immigrant families attempting to make a better life.