Seems that "virtue signaling" is the latest right wing catch phrase to minimize an argument.  At least it is a bit more sophisticated than calling somebody a "snow-flake".  Otherwise I think you are correct - probably up to congress to take care of those covered by DACA and give them a path to citizenship.  Hopefully they will not "kick" the proverbial "can down the road" (wait, is that an oldie but goody political cliché? Oops!).